SNOT SCIENCE

The internal lining of the human nose is filled with countless hair-like protrusions called cilia. These tiny organelles act as a nasal conveyor belt, moving sticky mucus to the back of the nose and down into the stomach. This process is known as mucociliary clearance, and it’s the human body’s way of trapping harmful bacteria, viruses or allergens before they can infect the body and cause damage to it.