I just recently had all 4 of my wisdom teeth pulled. About two days later I developed bad breath and a horrible tast in my mouth. Some times I do caugh up a terrible mucus taste.(dark brown some times black and at times bloody) But that does not always happen. It can develop the taste/smell with out the mucus. I have not had a cold priror to this and do not have one now. What is this and should I be worried? Also,I am a smoker.