Yellow mucus could also be caused by non-infectious triggers, like allergies. In a typical viral respiratory infection, such as the common cold, mucus in the nose starts out as clear but gradually ...

clearing mucus may relieve any discomfort from sinus pressure. Blow, not sniff, is the way to go. “When you notice yellow snot the best thing to do is to gently blow your nose as much as you can ...

The mucus in your nose serves many functions ... and in the process can dye it yellow. Yellow mucus doesn’t mean that you need antibiotics, but it means your body is fighting something; possibly ...