[Gemstar]

my neighboor upstairs and downstairs are heavy smokers, have to close all the windows at living room at night starting from 7pm, then when I want to open windows a few hours later, the guy downstairs is still smoking like a chimney.

I had this same scenario. Next unit kitchen windows facing my bedroom window and cigarette smoke simply blow into my room. As that uncle already quite old, can forgive him. No choice I hv to close my windows.