About a week ago i started having a bad taste in my mouth. It was really weird because i brush my teeth and floss everyday. When i started flossing one day in the back of my left top side of my mouth this horrible taste in my mouth kept coming up. I smelled the dental floss and I nearly threw up. I feel sick to my stomach. Iv'e tried brushing more on that side and using mouth wash but that taste wont go away. I don't even want to eat because it is so bad. I believe it may be a smell in between my gums maybe or even a tooth but none of my teeth are hurting me its just a smell that just recently started happening. I need to know how to get rid of this horrible taste in my mouth . Is there anything I can do to get rid of this smell?