Sniffing your way back: does scent therapy rebuild COVID-Shattered smell?
NCT ID NCT05384561
First seen Jul 31, 2026 · Last updated Jul 31, 2026
Summary
This trial tests whether a 12-week smell training program can help people who lost their sense of smell after COVID-19. Participants will sniff four different scents twice daily, with one group using rose, orange, clove, and eucalyptus, and another using cheese, coffee, strawberries, and lemon. The study compares the two scent sets to see which, if any, leads to greater improvement in smell function and quality of life.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Smell training with different odor sets
- What this could lead to
- If effective, smell training could become a simple, at-home therapy to help people regain their sense of smell after COVID-19.
- What could go wrong
- This is a small trial, and results may vary. Some people may not improve, and the benefit could be modest or short-lived.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Université du Québec à Trois-Rivières
RECRUITINGTrois-Rivières, Quebec, G8Z 4M3, Canada
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