I have been coughing up little yellow balls for a few days, this is not the first time it has happen its like it happens every other month or something but anyways I cough up little yellow balls that smell really really bad. Its not just one ball i cough up at a time but a few and it makes my breath smell very bad as well i have had my tonsils removed when i was little and i do not smoke. I do drink a lot of sweet tea though does it have something to do with that? I also notest that i dont remember having this problem until after i had my wisdom teeth pulled. can someone tell me why this is happening and what i can do to stop it.