However, green or yellow mucus is not necessarily proof of a bacterial infection.

Yellow, green, rust-colored, or bloody mucus that is coughed up from the lungs, especially while other symptoms are getting worse.

Cough, which continues throughout the day and night, often producing green, yellow, brown, or gray mucus (sputum) from the lungs.

He noticed with distaste that a large bubble of green mucus had formed at one nostril.

Frequently brings up yellow or green mucus from the lungs and lasts longer than 2 days.

Yellow or green mucus can mean a bacterial infection.

Ropy, yellow or green mucus with rattling in the chest.

Signs that you may have a bacterial infection after a cold are pain around the face and eyes along with thick yellow or green nasal mucus.

Another sign is coughing up thick yellow or green mucus.

A thick green mucus dripped to the floor from many of the still forms.