mucus
If your nose is "running," then you have a mucus discharge. The image is of the mucus running out of your nose so that you need a tissue or you need to blow the mucus out.
Clear nasal mucus or, "snot", is usually associated with allergies. If your nasal mucus is green or yellow you may have an infection and should see a doctor.
Sinus infection.
Call your doctor
mucus build up
You have a viral infection.
Mucus can sometimes be yellow or if you have a virus it can be yellow with blood spots in it( this could just mean your throat is irritated)
Assuming that you mean mucus from the nostrils, doctors normally prescribe anti-histamines. Apparently production of mucus in the nostrils is attributed to allergens that provoke histamine to produce mucus from mast cells.
bum mucus
yes lungs can get blocked by mucus if tha is what you mean :)
my vomit as mucus mainly