Yeah, I usually do when with a group of friends, but only if everybody is. Since both my Dad and brothers smoke I know what it is like to be around it when your trying to have a conversation, they open their mouth and it is the most foul stench ever.
I am not planning on doing it again though, I've done it enough and considering I also have asthma I figured it isn't the best idea, plus I can tell the difference, I have never struggled so much playing sport in my life, it is extremely uncomfortable.
So I guess I am a non smoker from now on!