It's NOT normal: You can say its a 'normal' symptom for having an illness, but having that illness is not normal. It means the lining cells of your airways are being inflamed and infected, and they are producing mucus to try to trap the products of inflammation and get rid of them. Your body is giving you a message, but you don't seem to want to listen. Stop smoking, it's bad for you and everyone around you.
Answered 3/12/2013
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