OK, some people here smoked for 30, 40 or even 50 years... That's a lot of smoke. How lungs can handle that amount of smoke? If you ask a Tobacco Control member he/she will tell you that lungs are a very delicate, fragile and sensitive organ of the human body and are designed just for inhaling pure mountain air... I am not a scientist or a doctor but I have a feeling that lungs can handle much more than just pure mountain air... And lungs definitely can handle small amounts of toxins. Am I wrong? I don't know, but according to Tobacco Control you all are dead and buried.