Libby,
That is tough spot to be in for sure. Even if he cares about you, which he probably does I would have to say, consider the fact that we are dealing with addiction, YOURS AND HIS and as you mentioned OTHERS as well. If someone won't quit for their own well being, AND THAT IS ADDICTION then the odds that they are going to see it as not caring for you are pretty slim, I don't know where you are in your quit but you cannot allow his smoking to keep you from quitting. SPRING CLEANING is here or right around the corner. A very good opportunity to GROSS him and yourself out with the nasty garbage coating the walls and everything inside the place. Also drive home the fact that NEXT YEAR, if smoking hasn't killed him, he will be cleaning up HIS MESS on his own. You will no longer be responsible for the tar and shellac, and other industrial wastes and byproducts you have to TRY and clean from the surfaces of everything in the house. Does he like painting? 🙂 Build a nice closed in porch....Designate a single comfy room for DRUG USE that has a POWERFUL exhaust fan to blow the pollution outside but don't be surprised if the neighbors get upset..LOL....Lead by example and maintain your quit but you have every right to NO LONGER BE EXPOSED to that trash. I'm a bit more radical myself and I hesitate to encourage people to be as radical but I do get results. Of course I am willing to take extreme steps to get them. Addiction is definitely trouble all around. CONGRATULATIONS ON THAT QUIT!
Jim