I don’t really leave the house that often, mostly to walk the dog, but I don’t then cuz it’s a huge open air space.
I do on the bus because of how confined it is and how many people use/touch it, but besides that I have no idea.
Do you always have to wear a mask in these places? Or just when there is a covid spike?
How do you even know when there is a covid spike for that matter?
Any indoor space unless you regularly meet with people like a classroom. Any outdoor space with a lot of particulate matter. People like to pretend that is reliable enough that self-quarantining can help. Yeah... no. I just can't afford to alienate people that way.
I change them out a lot more than recommended. I am a tower of wet filth. I must be destroyed. That's unrelated though.
What do you mean? That is the exact, most important case where you should use a mask. I've done 3 years of college in person since the CDC gave up on the COVID lockdown and masked religiously since the beginning, have not caught COVID in college once. I don't think it would've been possible without masking given all the data about the effectiveness of masks.
Particulate matter?
Smoke, moldy humidity, tire dust, anything