Your nasal mucous protects you by trapping dust ... (Image Credits: Pixabay) You must have seen that the colour of your nasal discharge tends to change and it is never the same.

Bacterial cultures on sheep blood agar of the left lung of the dead rabbit and the nasal discharge of the live rabbit both showed numerous small, nonhemolytic mucoid colonies (Fig. 3). On ...

You may notice nasal discharge or mucus that's thick and yellow ... from your nasal passages down your throat can irritate ...