question: I've had a tooth ache and severe head ache for the last three days however today I've gotten a stopped up nose and the drainage taste of something rotten so bad I gag an when I breath in to try and clear some of the mucus i smell a terrible rotten smell as well. I have some body aches and mild fever and feel very worn out. I can deal with everything except this horrific taste coming from the drainage on the left side   were the tooth pain and head ache has been. Any idea what is causing the smell and taste