Its a common fact these days that smoking damages your lungs, period! How does it do this? Well simply put smoking severely impairs your lungs ability to clean and repair itself by destroying the cilia, the tiny hairs, that line the upper airways and protect against infection.
If you are a smoker and find yourself coughing and experiencing shortness of breath and difficulty breathing for more than 3 weeks then you might want to get yourself to a doctor and get checked out for COPD
COPD is a disease that can be caused from the damage brought about from smoking. The worrying thing about COPD is that the initial symptoms are so subtle that many put down their deteriorating breathing down to fatigue or the natural process of old age.