I am not entirely convinced that tobacco smoke makes any difference either. To add to Tree Man's post, last fall my cousin and I were deer hunting. I don't smoke and was using Scent Killer, plastic tub for my clothes which had been carefully washed in scent free soap (as had I). My cousin, who has killed more game than I ever will, hangs his clothes in the garage and smokes before, during and after hunting. While we were hunting, his stand was about 100 yards upwind of mine. I watched four does mill around about 40 yards from me then wander toward Frank's stand. As soon as the deer were out of sight in the woods, I started to smell cigarette smoke. My first thought was, man, he just blew a chance at a nice fat doe. Fifteen minutes later I felt my cell phone vibrate. I pulled it out of my pocket and it was Frank, "I got one stuck, give it about fifteen minutes and then come help me find her."
When I got to his stand, I asked if he had been smoking. "Yeah, I had to put it out because four does came right under my tree. I picked the biggest one and shot her." The shot was under 12 yards. The deer had walked directly into the wind coming off his cigarette smoke. He put out his cigarette with four does standing within 15 yards of his tree.
I don't plan to take up smoking, but I don't really think the deer have anything against it.