Water and hydrogen peroxide about 1 T to a cup of water. It worked for me. I would definitely look into nickel though. I have breathing problems too and best thing to prevent it is rinse your mouth out after. Hope this helps.

Give natural yogurt with honey a try..it worked for me on my bottom and in my mouth...

I also got it from my inhaler. I used "Prevention" mouth rinse. It is alcohol free and it worked. It is basically hydrogen peroxide in de-ionized water. It has citric acid and peppermint oil in it. It worked really well and rather quickly. Rinsing after using the inhaler is really a must! (ow!)

my dentist told me to swish my mouth out with plain yogurt and spit out. adding probiotics help too

If on tongue brush it with toothbrush with toothpaste rinse with water or Listerine