The common knowledge these days seems to be that positive air pressure pumped into the common hallways of highrise buildings will allow smokers and non-smokers to live in the same highrise. Good seals between units is still needed, but the positive pressure prevents smoke from going into the hallway, and then into neighbouring units.
During the summer, many people open their windows. In fact, I like to put a fan in front of the window. Often, this blows cigarette smoke from neighbouring units into my unit. There is simply not enough ventilation to mitigate the heating up of the unit without a fan. Otherwise, it might possible that the positive pressure alone would ensure that smoke doesn't come in from the outside (assuming that the air from the corridor is bearably cool, which it often isn't). For the time being, I try to choose a window that is as far from the smoking apartment as possible, and place the fan in front of that window.
In the spring and fall, however, it might be possible to do without a fan in front of the window, and let the apartment be ventilated by the positive pressure. I don't know where the intake for the positive pressure is, however, and the air quality smells really "non-ideal".
Another complication is that the windward side of the building will experience a high pressure outside, and I wonder it is enough to counteract the positive pressure from the inside.
There seem to be so many variables that can upset the conditions for positive pressure to work. I wonder how well understood is the benefit of positive pressure? Or is it just one of those things that sound reasonable, but difficult to study empirically based on actual highrises?
I eventually want to move, but in the mean time, I am trying various coping mechanisms based on whatever I can understand about positive pressure. A complicating factor seems be the eddies on the leeward side of the building, making it hard to gauge whether to open the windows or which windows to open.