or another color, not clear or white. A condition like pneumonia, COPD, or asthma There are a number of potential causes of white mucus. Bronchitis is an inflammation of the airways in the lungs.

Black mucus can materialize after inhaling dirt or dust; or after smoking cigarettes or marijuana. But it can also signal a serious fungal infection, especially if you have a compromised immune ...

That may mean that you have developed a bacterial infection, sinus infection, possible bronchitis, but for few days, it's nothing to worry about. The best way to get rid of mucus is to keep it wet.