A runny or stuffy nose can be a symptom of the flu, a cold or allergies, and it can be hard to discern ... this is because the mucosa inside their nostrils gets so dry and fragile from the heat that ...

but the mucus in your nose traps all that gunk and stops it from going further into your body. And helping the mucus collect all this debris are the tiny hairs inside our nostrils. In the final ...