Loss of smell, or anosmia, is a common and often surprising symptom of COVID-19 caused by SARS-CoV-2. For those still affected weeks after recovery, researchers at the University of East Anglia have developed a straightforward exercise to help restore it.
Anosmia involves a complete loss of smell, which can be temporary or permanent and is a key COVID-19 symptom. While most people regain their sense of smell soon after recovery, about one in five report issues persisting up to eight weeks later. In a study published on April 26, 2021, University of East Anglia experts outlined a simple, cost-effective exercise with no side effects.
The method requires sniffing at least four distinct scents twice daily for several months. Choose familiar, easily recognizable smells, such as orange, garlic, mint, or coffee, for best results.
Lead researcher Professor Carl Philpott explains that this leverages neuroplasticity—the brain's ability to reorganize and adapt—to promote recovery. Essentially, it's about retraining the brain to identify odors again.
Doctors often prescribe corticosteroids for anosmia, typically used to reduce inflammation in conditions like asthma. However, the researchers caution there's insufficient evidence of their effectiveness for post-COVID smell loss.
These treatments carry risks like high blood pressure, fluid retention, and mood changes. Since most patients recover naturally, the exercise offers a low-risk first step before considering medications.
