I’m not a smoker and find the smell of smoke abhorrent, its amazing how much it can drift too, but i do understand smokers point of view… you buy a unit and you are somewhat banned from smoking. That said, I have a neighbour who happily smokes in his unit and the neighbours are none the wiser, he has turbo fans and purifiers going and even to be in his unit you would never know. I think that is a really good solution for all.