I lost my sense of smell from a minor virus I caught a couple years ago. It probably wasn't COVID (I tested negative at least).

It came back very slowly, and unevenly. My coffee/chocolate taste is still quite dim.

Of all the possible smells to lose, why did it have to be those?

Hard to say without more info but most at-home COVID tests have a very high false negative rate due to the virus mutating and generally how the test is designed.