I had something a few weeks back. Ran a fever for a few days. Was so congested I could breath through my nose without using nasal spray but the kicker was I had a hard time breathing, I went out and mowed the yard and it took me like 15 minutes to get my breath back. It was like I had pneumonia. That lasted 3 days and boom it was just gone. Corona wasn’t really here yet so I thought nothing of it and just pushed through