If a person coughs up blood and has dark or black mucus and phlegm, they should see a doctor as soon as possible. People who have darkened mucus due to smoking should stop smoking. In addition to ...

And, if it was black stuff they were working with, the phlegm can be the same color. Continued exposure to irritants, like ...

Understanding the disparity Smoking: Tobacco use: India has a significant population of smokers, including use of beedis and cigarettes, which can lead to black mucus due to tar and other harmful ...

People commonly refer to the black-pigmented material in ... prevent dirt and mucus from getting into the lungs. Smoking tobacco can destroy these hairs, allowing a number of these irritants ...