I do when I take the bus to work. I didn't have a single head cold (or COVID), late 2019-2023. If wearing masks prevents respiratory flu/head colds/whatever, I'

I do when I take the bus to work. I didn't have a single head cold (or COVID), late 2019-2023. If wearing masks prevents respiratory flu/head colds/whatever, I'm going to wear a mask. I do wear KN-95 masks and I'm careful about fit.