I think it's silly to refuse an adoption because of smoking. I don't smoke, but i have friends that smoke when they are at my house. No one has ever said anything about my dogs smelling like smoke. Their coats are fine. In great condition at this time actually!

anywho, I agree that I'd much rather adopt a dog to a home filled with smokers than have a dog be killed. The risk of the dog getting lung cancer is slim, but possible. I don't think it's enough of a problem to refuse an adoption though.