Dr. Alan Ali answered. For the past 5 days I've had a bad fever with a horribly dry throat. There isn’t a lot of information about how often people who smoke develop a smoker's cough. These chemicals cause the cilia, or the natural filters in your lungs, to go dormant. The fever is gone now, but I wake up daily with a dry throat. Usually, black mucus (medical name melanoptysis) is a symptom of irritation or an infection in the lungs. COPD (chronic obstructive lung disease) is primarily a combination of chronic bronchitis and emphysema. A female asked: is it normal to cough up yellowish grey mucus chunks after quitting smoking? Coughing up brown mucus? If it is persistent it is a sign of chronic bronchitis. Coughing up brown or black mucus is never a pleasant experience. Over time, you may start coughing up yellow and green phlegm. I know that usually when I get a dry throat it is due to post nasal drip and mucus in my throat. There are tiny hair-like projections on the surface of the airways called Cilia which help in clearing mucus and debris from the lungs. While the cough may begin as a dry cough, it can eventually produce phlegm. Coughing Up Brown Mucus After Quitting Smoking . Cough, discolored sputum, and wheezing are signs and symptoms of chronic bronchitis. The color of coughed up mucus can tell a lot about your health, especially if it is rusty-colored or black. Many smokers experience coughing up brown mucus after quitting smoking; yes, this may happen for a few more weeks after totally quitting smoking. But when you stop smoking, the cilia can begin working again – and they do! Coughing can last up to 90 days . This is a sign that the illness may be progressing from viral to bacterial. In one study of young military recruits, 40% experienced a chronic cough with sputum production (versus 12% in nonsmokers). When you smoke, impurities build up in the lungs. its mostly clear with dark brown spots sometimes its more than just spots its more like a brown gray blob."   Since a smoker's cough is more common in long-term smokers, the actual percentage is likely much higher than this. After quitting smoking, coughing up mucus is very common. 31 years experience Psychiatry. There is just too much for them to fight. "in the morning i've been coughing up dark brownish mucus. If the cough is persistent, lasting for more than 3 weeks, it is known as smoker’s cough. coughing up brown mucus after quitting smoking.