I'm someone with an extremely sensitive sense of smell. When I had COVID (the first time) at one point my sense of smell became corrupted. I didn't realize it

I'm someone with an extremely sensitive sense of smell. When I had COVID (the first time) at one point my sense of smell became corrupted. I didn't realize it at first. For days I smelled a tangerine smell in my apartment (where I was mostly holed up in those days). I kept thinking that they were cleaning the building carpets with some sort of new cleaner, and it was coming in the vents. After days of this I opened the window and smelled this smell much more intensely in the wind. Then with some experimentation I realized, it's me not the world. I worried that everything would smell like that forever, but luckily it came back. Something similar happened with smoke, where I felt like certain smells (coffee, for example) smelled like someone was smoking. Another confusing experience.