A chain smoker will likely develop lung cancer. Cigarette smoke is
inhaled into a person's lungs, thereby contaminating the lungs with the
carcinogenic effects of tobacco smoke. There are other cancer causing
chemicals contained in a cigarette and a chain smoker would inhale smoke
from two to three packs of cigarettes a day. This is a habit that
surely causes what is called "black lungs" which leads to lung cancer.
