That's what I'm facing in my apartment building. Other people second hand smoke thru the vents, and very strongly. Smells as if I'm smoking.
Thanks for backing up my thoughts. Funny thing is, my property manager sent out notifications to let us know that someone in the community of these apartments have been infected with the virus mind you! But wouldn't say who, what building or anything. But we renters can't go into the office because of COVID-19. But we can catch it from people here passing in and out. It doesn't make sense to me. It's like fend for yourself, but we are safely in our office where you are not allowed.