I just moved in nextdoor to a smoker and don't have the option of moving. The smoke permeates through my walls to the point where i'm sick all the time and my clothing smells like smoke. We have no vents (only radiators which i've turned off) so it must be coming through the plaster walls or the hardwood floors. I've got air purifiers all over and they don't do much. I'm desperate to breate clean air in my home so any suggestions would be greatly appreciated!