Electronic cigarette use and its association with asthma, chronic obstructive pulmonary disease (COPD) and asthma COPD overlap syndrome among never cigarette smokers Chronic obstructive pulmonary disease Wikipedia COPD Myths Health BeatHealth Beat Smoking slowly damages your lungs, often without clear symptoms at first. Every cigarette releases thousands of toxic chemicals that enter your airways and lungs. Over time, this damage becomes serious and sometimes