What will work?

Brush your tongue or clean it with a scraper.
Bad breath usually means that bacteria are chewing food residue and then release nasty sulfur compounds. Cleaning the tongue removes the film of microscopic food particles and removes unfriendly microbes before they regenerate gas. In a study at New York University, brushing teeth twice a day for 60 seconds caused a 53% reduction in sulfur compounds in the tone after 2 weeks.
It is also effective to rinse with a mouthwash containing bactericidal ingredients such as mouthwash, cetylpyridinium chloride, zinc lactate, or chlorine dioxide. If these strategies do not work, check your dinner plate: Garlic and onions contain scented oils that, when digested, will end up in your blood; they will be released into your lungs and may make you Breath for 3 days.
If there is no help, talk to your doctor or dentist. Stubborn halitosis may be advanced gum disease, dry mouth, sinus infections, tonsillitis, recessive tonsillitis (when white debris in the tonsils gathers in the pocket), acid reflux, or symptoms of gastrointestinal or respiratory infections.