Narrator: Achoo! Are you sick ... So when you sneeze, you're able to spray as much as a water bottle's worth of mucus into the air around you. It shoots out of your mouth in the form of moist ...

Myth or fact? Snot can be good for you. Producing mucus will help clear your sinuses, help clear your nasal passages. Laura Martin, MD, MPH And the snot and the mucus, they help keep our mucous ...

ACHOO syndrome causes uncontrollable sneezing from sunlight, camera flashes, and more. Evidence suggests that scientists have been trying to understand the cause as far back as 350 BCE.