Hi aloha22
I have a solution for you... Slow, but continuous and persistent pestering
Noone has ever been able to ressist the shear power of continuous nagging. I got one of my exs to quit smoking this way early on into the relationship (Very proud of that). She realised that the joy of having a quick one was not rewarding enough to put up with my annoyance hehehe
There is no need to get into a fight, just pester him from time to time. This will turn into a psychological an subconscious factor next time he reaches for that smoke...
Hope above helps!!!