What parosmia can involve
Parosmia is a distortion of the sense of smell: things you know well smell different, and usually unpleasant. Coffee, onions, meat and toothpaste are common triggers, often turning rotten, chemical or burnt. It frequently follows a loss of smell after COVID-19 or another infection, arriving a few months into recovery, and it can also follow a head injury or sinus problems.
It is often dismissed as a small thing. It is not. Eating becomes a chore, cooking for other people becomes a guess, and there is the quiet worry of not being able to tell whether food has gone off or something is burning. taluvu's founder lives with parosmia that began after COVID — that story is here — which is part of why this page exists.
Most people who lose their sense of smell after COVID-19 recover within weeks, but around 10% experience long-term problems, and for many of them parosmia begins a few months later.