Anosmia

This study tests a simple, at-home smell test to see if it can detect COVID-19 infection and track how smell recovers over time. About 1000 adults, including those with known smell loss and healthy volunteers, will use smell cards to rate odor intensity, identification, and discr…

This study tests whether daily exposure to different scents can retrain the sense of smell in 250 adults with smell disorders, including those from traumatic brain injury. Participants will use scented inhaler sticks at home and take smell tests before and after 12 weeks. The goa…

This study tracks 80 adults with different smell disorders (like total loss, partial loss, or distorted smell) plus healthy volunteers over one year. Researchers use brain scans, smell tests, and questionnaires to see how the brain changes and how smell loss impacts mood and dail…