I had four impacted wisdom teeth extracted 7 days ago and I was beginning to think that I was "out of the woods" when a putrid taste started making my mouth smell awful. At first I believed it to be because of the inhibited brushing, but I brush as well as I can(while still being mindful of the extraction sites) and within fifteen minutes of brushing the taste comes back.  There is almost no pain now so I do not think that It is infected or a dry socket.  I just tried contacted my oral surgeon and he was out to lunch.  Anyone have any ideas of what this could be?