I don't smoke. My dh smokes but always goes out into the back garden. My ds has made friends with someone at school but the child's parents smoke in the house and I'm not comfortable with that. I would never tell them not to smoke when he visits because it's their house and they can do as they please. I know a bit of second hand smoke once in a while isn't going to have any major affects but it still bugs me. How do others feel about this?