COVID-19 Still Linked to Smell Disturbance in Adults

New data shows 38% of Americans report lingering issues with their sense of smell following a COVID-19 infection.

Updated on Oct. 29, 2026 in Diseases — General

Isometric editorial illustration of a sculptural olfactory bulb, representing persistent sensory impairment in post-COVID populations. — Approximately 38% of U.S. adults report ongoing smell disturbances following a COVID-19 infection, according to 2024 National Health Interview Survey data. AI Illustration. Upload story photo >

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A study presented at IDWeek reveals that 38% of U.S. adults reported ongoing smell disturbances after contracting COVID-19, according to 2024 National Health Interview Survey data. While most individuals eventually regain their sense of smell, millions remain affected by long-term impairment.

Why it matters

Researchers conducted this analysis to better understand the prevalence and risk factors associated with post-COVID-19 sensory loss. This study highlights the persistent health challenges faced by a significant portion of the population years after the pandemic began.

Data indicates 82.8% of patients fully recovered their sense of smell, while 15.1% experienced only partial recovery. Approximately 2 million Americans still report no improvement in their sense of smell.

The players

IDWeek

This is an annual scientific meeting that brings together professionals from around the world to share information on infectious diseases.

The details

Researchers performed a secondary analysis using 2024 National Health Interview Survey data and multivariable logistic regression to isolate risk factors for sensory loss. Findings indicate a significant decline in these symptoms compared to the 40% to 45% of early cases, dropping to 4% to 12% during the omicron wave.

The COVID-19 pandemic began in 2020.
The National Health Interview Survey was conducted in 2021.
The National Health Interview Survey was conducted in 2024.
The IDWeek conference occurred in October 2026.

Health Landscape

Comparing current survey data to the 2021 National Health Interview Survey provides a clear longitudinal view of post-COVID sensory recovery trends. The current findings provide an updated figure that marks a shift in symptom prevalence compared to the benchmark established by the 2021 report.

For those experiencing persistent sensory loss, the data suggests that recovery timelines can be lengthy or incomplete for a minority of patients. Individuals with ongoing symptoms should consult medical providers to discuss current clinical strategies for managing post-viral olfactory dysfunction.

The takeaway

While the prevalence of smell loss has decreased since the beginning of the pandemic, it remains a significant issue for millions of Americans. Recognizing that full recovery is not universal encourages patients to seek professional support if symptoms do not improve over time.