I've never been all that into smoking. Not only is it addictive, hard to quit [1], unhealthy and proven to cause conditions such as lung cancer and asthma, I can't stand a smoker's stale breath. Who wants to kiss that? That's why I think it's such a turn off to see a guy light up a cigarette.

Source [2]

That's just my opinion though. What do you think about guys who smoke? Is it a turn on or a turn off?