I use to smoke .... shot a deer with a bow smoke clenched in my teeth .....that was 25 years ago deer arent the same critters .... much smarter /conditioned what ever.Since quitting I would say I see way more mature deer ... and much closer.I have used a smoke as a blocker on an escape route to my advantage.I have watched deer sneak around my buddys uncle while he sat puffing a smoke on a stump in a clear cut 300 yds away from me only to pass 20 feet from my stand .