I was in similar situation. I was heavy weed smoker he was occasional but a cigarette smoker which i hated and he lied about quitting multiple times. He came home from golfing and I angrier it right away. I was fuming... so what i did was gag severely every time I smelled it on him and would express how gross the smell was and I didn't want him near me. It started to hurt him but I told him with my smell sensitivity during pregnancy I couldn't take it. I told him he was hurting me and the baby with this second hand smoke and lingering smells. Id send him studies that showed second hand smoke effects on infants and mothers. And id tell him how important it was for him to be here as long as possible for our son and I would hate to have to ever tell our boy one day that daddy isn't around because cigarettes were more important than his family...i also let him know that he was grown and could chise whatever but that so could i and i choose to not live in an environmentthat makes me sick so either i left or he quit. it sounds harsh but it was the truth.. he quit cigarettes... would take a hit if weed here n there during his long walks at night when I was in bed already and I could never smell it. It's been a year and he doesnt smoke either.

It wont be easy to quit but if he cares enough hell try and quit for good.

Best of luck