How do I keep my girlfriend from starting smoking?

I'm worried that my girlfriend will start smoking. She told me yesterday that she went out with the "cool kids" and only had a couple of puffs. Her hair and her breath smelled like smoke and I could barely hide my disgust. How do I go about convincing her that there is nothing good about smoking (which is the way I see it)?
posted to Ask Metafilter by mockdeep at 11:15 AM on March 12, 2008 (83 comments)