There are a couple dozen other elements that are in there in trace amounts, but to a first approximation you're just a bag of carbon, oxygen, and hydrogen. Now, it turns out that the atmosphere is a bag of carbon, oxygen, and hydrogen as well, and it's not living.
Cigarette smoking is the most common irritant that causes emphysema. Pipe, cigar, and other types of tobacco smoking can also cause emphysema, especially if the smoke is inhaled. Fumes and Dust. Breathing in other fumes and dusts over a long period of time may also cause the disease.
Emphysema is an irreversible condition in which air becomes trapped in the lungs, making it difficult to exhale.Emphysema is a type of chronic obstructive pulmonary disease (COPD), and the most common cause is smoking.Emphysema occurs when the tiny air sacs in the lungs, through which oxygen is transferred to the body, are damaged and eventually destroyed.mphysema is an irreversible condition in which air becomes trapped in the lungs, making it difficult to exhale.