I've never once smoked a cigarette. But I lived with parents who smoked - wonder about second hand smoke?
My mom lived with us for about 5 years and smoked - my kids were little then. She would only smoke in her room but still . . .
I cannot tell you how relieved I am she has her own home now - 5 years of living with a smoker was hard and my husband was a saint to put up with it.