#24393. Asked by Booger. (Nov 19 02 2:04 PM)
Snot is usually just hardened mucus. The mucus is there to protect the cilia, which are the small hairs in the nose. The cilia trap dirt and prevent other potentially harmful particles from getting into the nasal passage.
Nov 19 02, 4:07 PM
Also, when you've got a cold or a cough, the mucus (snot) tries its hardest to engulf the germs, enabling you to either cough them up, or blow them out.
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