Does asthma occur in cigarette smokers?

Yes: Cig smoking causes copd, or chronic obstructive pulmonary disease. Asthma is one type of such disease, emphysema is another. Both components can be caused by smoking. Once you quit smoking, asthma component may get better. Emphysema is incurable. The sooner you quit, the more lung will be saved. Look up allen carr's book the easy way to stop smoking: great inexpensive method, works for many.

Yes: There are more than 4000 chemicals in cigarette which more than 50 of those are carcinogens (causing cancers). They all can cause severe irritation of the lung and airway tissue and that can initiate asthma attack or aggravate that. Asthma is an inflammatory disease which depends of the level of response to substances. So more chemicals, more risk.

Cigarettes: Yes, also Bronchitis, Emphysema, Lung collapse & COPD.