What is Anosmia — And Why Should You Take It Seriously?

sanjeev mohanty
4 days ago
8 min read

TRENDING ENT TOPIC · 2026 RESEARCH SPOTLIGHT

Can You Smell Again?

Breakthrough Treatments for Anosmia — Expert Guide 2026

By Dr. Sanjeev Mohanty | ENT & Head-Neck Surgeon | Chennai | April 2026

Part 1 of 3 — Understanding Anosmia

Imagine waking up one morning and not being able to smell your morning coffee. Not a cold, not a blocked nose — just silence where aroma should be. That is anosmia: the complete or partial loss of the sense of smell. For years, it was dismissed as a minor inconvenience. Today, ENT specialists across the world — and right here in Chennai — are treating it as a significant neurological and quality-of-life concern.

Anosmia affects an estimated 5% of the global population. After the COVID-19 pandemic, this number spiked dramatically, bringing the condition into mainstream awareness for the first time. Whether the cause is viral infection, nasal polyps, head trauma, chronic sinusitis, or neurological degeneration, one thing is now clear: anosmia deserves proper diagnosis and evidence-based treatment — not just a "wait and see" approach.

"Smell is the most ancient of our senses. It is deeply tied to memory, emotion, appetite, and safety — detecting gas leaks, smoke, or spoiled food. When you lose it, you lose a fundamental layer of how you experience the world."

— Dr. Sanjeev Mohanty, ENT & Head-Neck Surgeon, Chennai

The Two Faces of Smell Loss

Conductive anosmia occurs when physical blockage — swelling, polyps, or mucus — prevents odour molecules from reaching the olfactory receptors in the upper nose. This type is often reversible. Sensorineural anosmia, on the other hand, occurs when the olfactory nerve or brain pathways are damaged — a harder but increasingly treatable condition thanks to modern research.

Who Gets Anosmia? Common Causes You May Not Expect

The causes of anosmia are far more diverse than most patients realise. A proper diagnosis depends on identifying the underlying cause — requiring both clinical expertise and advanced diagnostic tools.

• Post-viral infections (COVID-19, influenza)

• Chronic rhinosinusitis and nasal polyps

• Head trauma or concussion

• Neurodegenerative diseases (early signs of Parkinson's, Alzheimer's)

• Allergic rhinitis and nasal inflammation

• Hormonal changes and thyroid disorders

• Long-term exposure to toxic chemicals

• Ageing (presbyosmia)

• Nutritional deficiencies — Zinc, Vitamin B12

• Certain medications — antibiotics, antihistamines

WHEN TO SEE AN ENT SPECIALIST IMMEDIATELY

If your smell loss has lasted more than two weeks, is accompanied by facial pain, headaches, vision changes, or has appeared suddenly without a preceding cold — consult an experienced ENT surgeon promptly. Early assessment significantly improves treatment outcomes.

The Hidden Impact of Anosmia on Daily Life

What most patients and some physicians underestimate is the emotional toll of smell loss. Smell is uniquely connected to the limbic brain — the seat of memory and emotion. Patients with anosmia frequently report depression, anxiety, social withdrawal, and disrupted eating habits. They struggle to enjoy food, feel disconnected from loved ones, and live with a constant fear of undetected hazards.

A landmark study showed that over 68% of patients with persistent anosmia reported a measurable decline in overall quality of life. The sense of loss was — and remains — profoundly real.

5%	68%	2–3×	12 wks
Global population affected	Patients with reduced quality of life	Higher risk of depression	Avg. wait before specialist care

Part 2 of 3 — New & Emerging Treatments

The Science of Smell Recovery: What's New in 2026?

Until recently, patients were told there was 'nothing much to do' for smell loss beyond treating the underlying cause. The past few years have seen a remarkable acceleration in anosmia research, with multiple treatment modalities now showing strong clinical promise — some already being offered at advanced ENT clinics in Chennai and across India.

Most Widely Used Olfactory Training (Smell Therapy) Patients deliberately sniff four specific scents — rose, eucalyptus, lemon, and cloves — twice daily for 12–24 weeks. This stimulates olfactory nerve regeneration and retraining of brain smell pathways. Clinical studies report up to 40% improvement in smell function with consistent practice.		Innovative Therapy Platelet-Rich Plasma (PRP) Therapy The patient's own blood platelets — rich in growth factors — are concentrated and injected near the olfactory cleft. These growth factors stimulate tissue repair and potentially regenerate damaged olfactory neurons. Early-phase trials show promising results for post-viral anosmia with minimal side effects.

Emerging Research Electrical Stimulation Therapy Transcranial direct current stimulation (tDCS) and olfactory epithelium electrical stimulation are being studied to reactivate dormant smell pathways in the brain. Early research suggests it amplifies the effects of olfactory training, especially for patients unresponsive to standard therapy.		Medical Management Intranasal & Systemic Corticosteroids For conductive anosmia caused by inflammation, polyps, or allergic rhinitis, corticosteroids remain front-line treatment. As nasal sprays or short oral courses, they can rapidly restore smell function by reducing nasal mucosal swelling and inflammatory obstruction.

Surgical Option Functional Endoscopic Sinus Surgery (FESS) For anosmia caused by nasal polyps, deviated septum, or chronic sinusitis blocking the olfactory cleft, minimally invasive FESS can remove physical obstruction and dramatically restore smell. When performed by an expert ENT surgeon, outcomes are excellent with rapid recovery.		Supportive Therapy Vitamin & Nutritional Supplementation Omega-3 fatty acids, Zinc, Alpha-lipoic acid, and Vitamin A have shown varying degrees of benefit in smell regeneration studies. Alpha-lipoic acid in particular has demonstrated neuroprotective properties for olfactory neurons. Best used as adjuncts to primary treatment.

Olfactory Training: A Closer Look

Of all the treatments available today, olfactory training stands out because it is safe, inexpensive, and effective — recommended as first-line therapy by ENT specialists worldwide. The science lies in the remarkable plasticity of the olfactory system: unlike most neurons, olfactory receptor cells can regenerate. Olfactory training harnesses this natural ability.

The standard protocol involves sniffing four essential oil scents — one from each primary smell category (floral, fruity, aromatic, resinous) — for 20 seconds each, twice a day, for a minimum of 12 weeks. Patients are instructed to actively focus on the memory of that smell, engaging both the olfactory nerve and the memory centres of the brain simultaneously.

How To Start Olfactory Training at Home

Obtain four pure essential oils — rose, eucalyptus, lemon, and clove. Each morning and evening, hold each bottle close to your nose for 20 seconds and breathe gently while actively trying to recall the scent. Keep a daily diary of any changes. Always do this under the guidance of your ENT specialist, who can track progress and adjust the protocol if needed.

PRP Therapy: The Frontier of Regenerative ENT

The procedure involves drawing a small volume of the patient's own blood, processing it in a centrifuge to concentrate the platelets and their growth factors (PDGF, VEGF, EGF), and then carefully administering this concentrated solution into the olfactory region of the nasal cavity. The growth factors stimulate repair of damaged olfactory epithelium and promote neuronal regeneration.

What makes PRP particularly attractive is its outstanding safety profile. Because it uses the patient's own blood, the risk of allergic reactions or immune rejection is essentially zero. Current evidence suggests it is most effective when combined with olfactory training, creating a synergistic effect on recovery.

What Does the Recovery Journey Look Like?

Recovery is rarely instant. The olfactory nerve — when damaged — heals slowly. For some patients, the first signs of returning smell may appear within 4–6 weeks of starting treatment. For others, meaningful improvement may take 6–12 months of consistent effort.

The good news is that most patients who engage early and consistently with a structured treatment plan — combining olfactory training, appropriate medical management, and in some cases surgical or PRP intervention — do experience meaningful improvement. Complete recovery is possible, particularly for post-viral cases where the nerve was not permanently severed.

Part 3 of 3 — Getting the Right Help in Chennai

Why Early Expert Diagnosis Changes Everything

The single most important factor in treating anosmia successfully is seeking specialist care early. Many patients spend weeks — sometimes months — hoping the problem will resolve on its own. While spontaneous recovery does occur in some mild cases, persistent smell loss beyond two weeks warrants a proper ENT evaluation.

An experienced ENT surgeon will conduct a thorough olfactory assessment using standardised smell identification tests, nasal endoscopy to evaluate the olfactory cleft, and in some cases CT or MRI imaging to rule out structural or neurological causes. This multi-pronged approach ensures that the right treatment is matched to the right cause — the cornerstone of effective anosmia care.

In Chennai, patients suffering from smell loss now have access to world-class ENT care. Among the city's most respected ENT surgeons, Dr. Sanjeev Mohanty at Dr. Mohanty's Speciality ENT Clinics, Manapakkam, has emerged as a trusted name for patients dealing with complex nasal and olfactory disorders. With over 25 years of clinical experience, he brings both the diagnostic precision and the surgical expertise needed to manage even the most challenging cases of anosmia.

Outlook: What Does the Future of Anosmia Treatment Look Like?

The field is moving faster than ever. Stem cell therapy targeting olfactory epithelium regeneration is showing early-phase promise. Gene therapy approaches for genetic forms of smell loss are in experimental stages. AI-assisted olfactory rehabilitation protocols are being developed. And wearable neuro-stimulation devices are moving from research labs toward clinical trials.

The message for patients today is profoundly hopeful: even if you have been living with smell loss for years, you should not give up. New treatments are emerging, and a skilled ENT specialist can now offer a structured pathway toward recovery that simply did not exist a decade ago.

"Every patient who walks through my clinic door with anosmia receives a personalised plan. From olfactory training to PRP consideration to surgical correction — we look at the whole picture, so you have the best possible chance of smelling the world again."

— Dr. Sanjeev Mohanty, Best ENT Surgeon in Chennai

Dr. Sanjeev Mohanty

ENT & Head-Neck Surgeon | Dr. Mohanty's Speciality ENT Clinics, Chennai

1. Dr. Sanjeev Mohanty is one of Chennai's most celebrated ENT and Head & Neck surgeons, with over 25 years of rich clinical experience in diagnosing and treating the full spectrum of ear, nose, throat, and head & neck conditions.

2. He has personally performed over 20,000 ENT surgeries, building a track record of excellent patient outcomes across routine procedures and complex surgical interventions alike.

3. Dr. Mohanty's expertise spans Otology & Neurotology, Rhinology, Skull Base Surgery, Laryngology, Cochlear Implant Surgery, Paediatric ENT, Rhinoplasty & Facial Plastic Surgery.

4. A prolific academic, he has authored and co-authored 100+ peer-reviewed research publications, contributing significantly to evidence-based ENT practice across the country.

5. His professional excellence has been recognised with 25+ national and international awards and honours, affirming his standing as one of India's leading voices in Otorhinolaryngology.

6. Dr. Mohanty's clinic at Manapakkam, Chennai has served over one lakh happy patients, offering compassionate, patient-centred care that combines cutting-edge technology with a personalised approach.

7. He manages a comprehensive suite of ENT services including advanced hearing assessment, cochlear implant programmes, airway disorder management, rhinoplasty, and vertigo & tinnitus clinics — all under one roof.

8. Dr. Mohanty is deeply committed to making world-class ENT care both accessible and affordable for the people of Chennai and Tamil Nadu, with appointment-based consultations available in-person and online.

9. Patients consistently describe him as warm, thorough, and reassuring — a clinician who takes time to explain every aspect of diagnosis and treatment, empowering patients through knowledge.

10. Dr. Sanjeev Mohanty can be reached at +91 97910 74677 | www.drsanjeevmohanty.com | 3, 234 Manapakkam Main Road, opposite Jain's Avantika, Manapakkam, Chennai — 600125.

Book an Appointment: +91 97910 74677 | www.drsanjeevmohanty.com

Conclusion: Your Sense of Smell is Worth Fighting For

Anosmia is no longer an invisible condition that patients must silently endure. With the rapid advances in olfactory research — from structured smell training to regenerative PRP therapy, electrical stimulation, and beyond — the possibilities for recovery are more real than ever before.

The journey begins with awareness, continues with an accurate diagnosis by a trusted ENT specialist, and unfolds through a personalised, evidence-based treatment plan tailored to your unique cause of smell loss. Whether your anosmia developed after a viral illness, injury, or chronic nasal condition — there is a path forward.

If you or someone you love is experiencing smell loss, do not wait. Early intervention offers the best outcomes. Chennai is fortunate to have dedicated ENT specialists like Dr. Sanjeev Mohanty who combine deep surgical expertise with a genuine passion for patient recovery. Your nose knows what it's missing — give it the care it deserves.

Dr. Mohanty's Speciality ENT Clinics | 3, 234 Manapakkam Main Road, Chennai – 600125 | +91 97910 74677 | www.drsanjeevmohanty.com