Here's a response I have been trying to work in on someone (unfortunately its tough to find places in public to light up in California so I don't think I'll ever get to use it)
person hating my cigar smoking: "second hand smoke kills"
Me: Really??? Good that was why I lit up.
Or: Could you put that out?
Me: Sure, but next time you are doing something that you find both relaxing and pleasurable, please call me up and let me know so I can some to your activity and ask you to stop.