I think i left a message like this on a different post, but here it is again. My father and I both smoke while on stand. I think that deer only associate cig smoke with danger if they associate it with humans. Every deer I have ever shot, with a bow, has been 25 yards or less. I have also had numerous deer right under my stand that I have not shot. I don't seem to have a problem very often at all. In one situation I actually shot a deer with a cig in the left corner of my mouth and my kisser button in the right side of my mouth. I guess it is all in what the deer get used to.