With my living situation, I am frequently around second hand smoke. As a smoker, I am aware of the hazard that I pose to others. I really wish that I could quit smoking, not only for my own health, but the health of others.
A tragic story I have to relay is about the death of my aunt Virginia. She never smoked a day in her life. Her husband was an avid pipe smoker. My aunt passed away from emphysema. That is a definite result of second hand smoke. My uncle had quit smoking twenty years before her death.