You are in Member Communities . I don't think nagging will do your husband any good. I know if someone nags at me, I will go the opposite direction. I am a smoker and I badly want to quit, but it is a scary thing to do. Cigarettes are so addictive, and I think it is more addictive than heroine.
Smokers know what the bad things smoking does to their health and their social life.
Your husband has to decide to quit. When he does quit, you have to be supportive and not nag. If he fails, then you have to be even more supportive. That way he won't be put off quitting again. Maybe, if you sit down with your husband and quietly explain your concerns, and not get mad at him, he might listen.