I've never even tried it, never want to either. I'm 100% against it. So much so that when my girlfriend went out with her mates (half of them smoke) she tried it from peer pressure i guess, although she denies it was, just before she came to meet me (bad move), she didn't like it at all, mainly because as soon as i smelt it on her breath i actually turned around and walked away from her, then as if she didn't get the point then, I went out to meet her mates with her the following week, and she took a drag from someones fag, so I just stood up and walked off and didn't even speak to her until the following day despite her best attempts at chasing after me and talking to me, I just kept walking... That's when she got the point how much I hate it.
Infact, I'm so much against it I'm all for a 100% ban, and the public ban that's coming in soon is only a good thing, I may actually start going to the pub when that happens.