During a local lull in the pandemic my wife and I attended an indoor event. People were kinda wearing masks and kinda social distancing, but a couple days after we got back I felt sick.
It was pretty miserable for a few days. I was constantly tired and my throat hurt, and I swore it was COVID-19 because I had gotten my flu shot recently. However my symptoms cleared up for the most part in about a week. Coincidentally, I had a physical exam schedule a few weeks later. I got blood work done so I asked if they could do the COVID antibody test while they were at it. Turns out it wasn’t COVID at all! I just had a cold of some kind.