Has anyone experienced this after covid? During covid my daughter had a tonsil stone that she pushed out herself 2 months later she felt a tiny lump on the tonsil and yellow puss came out when squeezing it, she started to have a foul odour in her mouth and still after 4 months she cannot smell or taste most things the way she used to.
Main trigger foods that affect her are, cheese&onion, chicken and coffee.
These taste of a bitter taste instead of the normal taste.
No gp can tell us what this is and ent isn’t really able to say either.
They did a mri scan and found a tiny cyst on the base of the tongue so not sure if it’s that causing it.
It’s ruining her life at the moment she’s really distressed by it all. 
Any ideas please 