Actually...nothing. The people in my state (CO), or at least my part of the state, are actually quite good about wearing masks - the only ones who seem to ignore wearing masks are generally 20-30 year old males.
Using public restrooms, especially the ones at Walmart, Target, etc.
I wouldn't use those even in the best of times...unless it was an emergency.
So the worst thing, I guess, is being around people who don't social distance and don't wear masks. It doesn't happen often, but when it does I just ignore it and quickly gtfo of wherever I am.
Using public restrooms, especially the ones at Walmart, Target, etc. It just feels like a gamble, even though they have soap, hand sanitizer etc in the bathrooms and everyone's wearing a mask, me included.