This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of ...

Your goal is to use your nose to pull excess phlegm down into your throat ... This hue is caused by an enzyme produced by your white blood cells that are fighting off the infection.

Test results recently confirmed that a bat in southern Arizona has tested positive for the fungus that causes a deadly ...

It lubricates the lining of the nose when it gets too dry but ... one fight off infection,” Glatt states. Normal mucus often looks clear or white for most people, experts say.