They may also: 1  Have a combination of skin, hair, and eye color that is outside the range for humans. 2  Some different preferred environment to humans (e.g. mountains, caves, tundra, deep forest). 3  Some sort of crafting/building ability. Lots of dwarves have this trait. 4  Be Always Chaotic Evil, Always Lawful Good, etc.
Chronic forms of sinusitis are also thought to potentially be a cause of the condition. Whatâs most important to understand about black mucus in nose areas is that it is not normal. There is something that is causing the change in hue in the protective goo.
The black stuff is tar. It takes several months to get the tar out your lungs. And when you smoke, you stay sick much longer. I used to be a ciggarette smoker. I would stay sick for weeks and coughed up black stuff for about 3 or 4 months, even when I wasn't sick.