Hydrogen peroxide to fight bad breath

no, never use hydrogen peroxide for bad breath also intra oral for any other use. there r many other methods to get rid of bad breath. contact yr dentist.

I do not recommend the use of hydrogen peroxide as a mouth rinse.  I do have few patients who rinse with it and refuse to quit, however I try to convince them to at least dilute the hydrogen peroxide down to about 10% or less.  The issue typically seen with hydrogen peroxide is sloughing of the gum tissue, basically the outside layers of your gums pull away come off.  I would highly recommend the use of Listerine antiseptic or Crest ProHealth Rinse instead.

Never heard of that technique.  Do know that using it makes you end up with a black coating on your tongue.  If you want to get rid of bad breath, get any cavities filled, your teeth cleaned well, brush and floss daily, cut out the garlic and the smoking...............sorry.  No easy answer.