I have bad breath which I thought was due to Rhinitis which is what my doctor diagnosed, but i have swabbed the back of my throat and my tonsils and there is no smell, but when i spit into a tissue, i can smell it. I have tried all the different toothpastes, mouthwashes, mints, etc. According to my dentist, my teeth are in "tip top condition". I am also using a neti-pot with saline water twice a day as I had read the smell could be coming from my sinuses. any ideas?