I know I will never smoke again

We had visitors all weekend, last night we went to the club. Sitting around talking to all our friends, out of all those friends one smoked. I decided to go out side with him while he was having a smoke. He gave me a smoke, one puff and turned green, almost vomiting. I will never, ever go back to smoking. Have wanted to know how I would go with a smoke and now I know.