Why you will never convince me that second hand smoke is a danger. I grew up in a home where my parents were chain smokers. All 4 of my siblings picked up the habit, I didn't. Now, years later, after everyone quit, I'm the only one of the siblings with lung problems. I have a spot on my lung and have to go in for another cat scan. Along with my other problems, I may now have lung cancer. We already know I have an enlarged artery on my lung...... If you smoke, stop. Not for your benefit, for the benefit of your loved ones. My mother and 2 aunts died of lung cancer....I miss them terribly.