BTW - my boyfirend stills smoke too. but only in one room of the house.. and he keeps the window opens all the times and the door closed.. it was hard at first, sometimes it smells nice an other times it is grows... but he also wants to help me with this.. Having quit kind of helps him too.. he slows down a lot when he spends his weekend with me.. He might smokes more during the week with his construction buddies but definitly has slowed down a lot at the house and it is helping him to realise he will have to quit too.. he realised that he wants to quit.. hope this helps a tinny bit more..