My DS has horrific breath. He always has. He is now 22. Its so bad i have to put my top over my nose if he sits next to me. My DH thought someone had got into the car with dogmess on their shoes yesterday but it was the car filling up with his breath. I have taken him to docs who just said to try changing his diet. He eats the same as us and we dont all smell like this. I have today purchased CB12 mouthwash, new brushes, tounge scrapers and sugar free gum and have got him a dental appointment. I hope they can help. He has great overall hygiene. Showers twice daily and brushes teeth2 or 3 times a day because he knows he has a problem. Any other advice?