People with anosmia have lost either all or partial sense of smell. This can be a permanent condition, but for most people, anosmia is temporary.
The most common causes of anosmia are the common cold, flu, Hay Fever, and Covid-19. There are other more serious causes of anosmia as well.
People with anosmia have a hard time picking up on the aromas of wine. This makes it very difficult for people with anosmia to taste wine.