Post-COVID Smell Loss Trends Affect Many Adults

New survey data shows that while most people recover their sense of smell after COVID-19, millions face long-term issues.

Updated on Oct. 29, 2026 in Diseases — General

Gouache-painted editorial illustration of a glass test vial containing a delicate vapor puff, representing the persistent sensory challenges of post-COVID recovery. — Recent national survey data indicates that while most adults recover their sense of smell after COVID-19, millions continue to experience sensory disturbances. AI Illustration. Upload story photo >

Live Poll

Does ongoing research into post-COVID symptoms increase your trust in current public health guidance?

Recent data from the 2024 National Health Interview Survey shows that 38% of U.S. adults reported experiencing smell disturbances following a COVID-19 infection. While most individuals regain their sense of smell, millions continue to face long-term sensory challenges.

Why it matters

Understanding the prevalence of post-COVID sensory loss is essential for patients managing persistent symptoms. This updated survey data highlights that while full recovery is common, a significant subset of the population remains affected by ongoing smell impairment.

A secondary analysis of the 2024 National Health Interview Survey identified a 38% prevalence of post-COVID smell disturbance among U.S. adults, compared to 60.5% in 2021. While 82.8% of those affected achieved full recovery, approximately 2 million Americans currently report no improvement in their sense of smell.

The players

IDWeek

An annual scientific conference focused on advancements in the prevention, diagnosis, and treatment of infectious diseases.

The details

Researchers utilized multivariable logistic regression on national survey data to analyze factors associated with sensory loss following COVID-19. Early pandemic variants were associated with a 40% to 45% rate of smell disturbance, which significantly declined to 4% to 12% during the omicron era. This trend suggests that changes in viral characteristics or population immunity have influenced the incidence of sensory complications over time.

2020: The COVID-19 pandemic began.
2021: The National Health Interview Survey was conducted.
2024: The latest National Health Interview Survey was conducted.
October 22, 2026: The study findings were presented at the IDWeek conference.

Health Landscape

The National Health Interview Survey serves as the primary federal benchmark for tracking the population-level impact of chronic post-viral symptoms. This latest analysis provides a critical update on the shifting prevalence of smell disturbances as the virus has evolved from early strains to omicron.

If you have experienced ongoing smell loss following a COVID-19 infection, it is worth discussing your symptoms with your primary care physician to rule out other causes. Monitoring your progress over time is key, as most individuals in the study did report full or partial recovery.

The takeaway

While most people fully recover their sense of smell after COVID-19, a small percentage may experience lasting changes. If you are among those without improvement, consult your doctor about sensory rehabilitation strategies or to confirm the cause of your persistent symptoms.