This pretty much describes a lot of my current physical/medical state. I've been in the "mild" (but gradually worsening) category for decades, was getting toward "moderate" level, but then post-infection "long COVID" immediately thrust me far into the moderate category, with no relief in sight.
For those who ask if I've experienced loss of sense of smell/taste - - I still have those senses, but they are dulled in some ways, sharpened in other ways. Dulled as far as my overall limit of detection is concerned, sharpened in that certain foul scents/tastes affect/disgust me more acutely.
It's possible that my central nervous system compensated for the overall diminished ability to smell/taste by increasing the severity of my reaction to unpleasant smell/taste triggers.