A smell of burning was how I suspected I had COVID the last time around. I was around some machines, I had to have someone else sniff around and let me know that nothing was actually burning.

Same here, and it's still there. I can't smell or taste a random set of stuff, like cinnamon, poop/farts. What annoys me most is that female genitalia just taste like nothing, literally...

In addition to this, I sometimes smell scents that do not exist.