Originally Posted by
androidz
The cough doesn't have to be necessarily wet, that depends on whether your mother had mucus in her lungs as a result of smoking or not, not everybody get their lungs full of, pardon my french, crap. It depends on how long she's been smoking for, if she inhales the smoke or not, etc.
If she has been a long time smoker though, it would be worth telling her to get a chest CT scan done just for peace of mind, it doesn't hurt and both you and your mother should feel very reassured.
Just don't obsess over her cough, it's supposed to happen, wet or dry.