Coughing up green sticky phelm?

Possibilities.... If this is a change in color or consistency, it could be due to acute bronchitis caused by an infection of the airways, either bacterial or viral. If you have other symptoms of infection, like fever, chills, nasal congestion, body aches, etc., or if it isn't improving, then see your doctor. If a bacterial infection is present, you may need antibiotic therapy. If you smoke, you need to quit.