Why chest tighten when smoking cigarette?

Cigarettes = badness: Cigarettes can lead to bronchoconstriction or narrowing of breathing tubes, thus making your chest tighten. Cigarettes can also damage cilia, the little hairs in your breathing tube that keep lungs clean. So if cilia don't work, more junk builds up in lungs. Cigarettes can also make blood vessels narrow down, thus making it more difficult to move blood from one part of body to another.Quit smoking.

Depends: It may mean bronchospasm from irritation from cigarettes, bronchitis, or even cardiac ischemia pain because cigarettes smokes contain carbon monoxide which may cause lack of oxygen to the heart resulting in heart pain. If symptoms persists need to quit cigarettes and see doc to exclude asthma, chronic bronchitis and heart disease, .