topped my bad breath with good oral hygiene, nasal cleansing and supplements.
I removed a piece of popcorn kernel from under my gum which had a terrible smell. After that, my dentist and doctors said I was in good health but I still had bad breath for the next 2 years.
My oral routine is now an enzyme promoting toothgel and mouthwash(that treat my dry mouth and contain xylitol), floss, a tongue scraper, and an anticeptic oral cleanser containing carbamide. I floss, then crape my tongue gently. Then put 10 drops of carbamide gel on my tongue, mix with saliva and spit. I put 3 drops of carbamide gel on my soft bristle toothbrush then brush my teeth, gums, cheeks and tongue. Rinse and gargle with mouthwash. That's ususally three times a day. And about 3 times a week I polish my teeth, etc before I brush -- mix in my hand of 1 tsp each of baking soda and salt with a little water.
I cleanse my sinus/nasal area with a nasal irrigator a few times a week with 1 tsp each of salt and baking soda. Or twice a day if I am having sinus problems.
The other key was treating my sinus/post nasal problem with whole food supplements that contain supercritical garlic and oregano. Also changed my mouth and body's smell with a whole food supercritical antioxidants blend like tumeric, clove, ginger rosemary. And sip plenty of water through the day to stay hydrated. If I chew gum, it contains xylitol.
I needed to do a better job of brushing when and how I should. My body just needed supplements to be more healthy. The byproduct is I generally just feel better. The best thing is for the first time in years, I am not self conscious when I kiss my husband.