Person who works in office but not same company, to client: You don't have to wear a mask. Do you mind if I don't wear one? (client gleefully assents)

BUT I MIND and I have to work in the same GD air as you every single day. Plus, laws and all that.

I'm ranting here, because I have no recourse at this point, having tried all available avenues. I'm also whining; I have a job and my own office, and am lucky in many respects. The Golden Rule has whizzed off into the ether like a deflating balloon. Spew unto others as you would have them spew unto you.