Weird smells after covid?

I had covid a month ago and now I noticed I randomly smell weird smells. For example at the doctor I smelled fresh cut grass but obviously there was none and it’s on the 3rd floor at a downtown building. I also have randomly smelled celery at work. I commented this to my sister who lives in another city who also had covid and she said the same thing happens to her and husband. They will smell random things! Has this happened to anyone else?