Watery eye mucus often comes from a virus and is linked to pink eye. Thick green or gray mucus can mean a bacterial infection needing antibiotics. Yellow mucus with a bump might be a stye, and a warm ...

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...