I've been known to dip while hunting. Never had any reason to quit yet. If a deer comes in close enuf to get a whiff of what I'm chewing its more than likely going to be shot.
I also don't believe in all the gimicks like scent blocker outfits and all that crap. I hunt in my work bibs and coat (they are camo, but are usualyl covered in grease/oil etc) and I have never been winded.