I feel for you, DR Cillaliz. Although I live on the 4th floor, the smoke from the smokers wafts into all of my windows as I am just above the area where smokers accumulate.
Smoking is not allowed in the apartment building, but it is allowed in the area to the right of the entrance or on the roof top garden.
Usually cigarrette smoke does not bother me much if I am just walking past a smoker...but for some reason, once the smoke has risen to the fourth floor is smells very stale and yuckky...and of course once it is in my apartment, there is no escaping it.
This is probably karma coming back at me for the years that I was a smoker and fouled the air all around.