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Michael R (Edwardsville) on 04/05/2022:
My BAD breath was not from the mouth but from the Nasal area. I suffered from very bad breath and the typical mouth-teeth treatment did not work.
I used a Neti Pot with Salt Water and a "small dash" of Hydrogen Peroxide to get rid of a sinus infection. A few weeks later my wife noticed my breath was OK. Thank God...
Important: use canning/pickling salt (no additives & cheap)