Tobacco can damage lungs; but is there even a single person on the planet who doesn t know that? On being burnt tobacco leaves can produce over 4000 chemicals . This dangerous smoke cocktail smoke contains nicotine formaldehyde benzene carbon monoxide tar and other carcinogens can wreck havoc in your body and the first line of causality is usually your lungs. From colds and COPD to the more worrisome pneumonia and cancer tobacco consumption can precipitate into scary life-threatening conditions. It doesn t even spare passive smokers. But if you thought the damage stopped at your lungs you are wrong.