On one hand, you almost want a test to discover something wrong with your breathing so that it can be fixed, but on the other hand, it's good to also know that you're health according to the tests. Catch 22!

I wonder if you've developed allergies around the time of covid. I developed some sinus inflammation a few years ago that may be due to allergies but have also been managing that. Do you feel like it's pretty difficult to breathe normally through your nose? I've noticed that when I get sinus flare ups, it definitely increases the feeling of air hunger and gives me a hard time trying to breathe normally.