Here’s a look: Yellow mucus: Cold-like illness Green mucus: Bacterial infection Brown mucus: Dried blood in the nose or inhaled pollution or dirt Reddish or pink mucus: Blood from the mouth or ...

coughing up thick, greenish-yellow phlegm, and ongoing systemic symptoms such as fever, body aches, chills, changes in appetite or difficulty swallowing. These could be signs of pneumonia or another ...

According to Kohli, UCLA Health and the Mayo Clinic, these symptoms include: shortness of breath, fainting, wheezing, coughing up thick, greenish-yellow phlegm, and ongoing systemic symptoms such ...