Drink plenty of water. Extra water flushes away more food, so there’s less material for bacteria to break down.
Brush your teeth, gums and tongue daily. Clean as far back on your tongue as you can, as that’s where bacteria often collect.
Flossing helps removes food particles from between the teeth and under the gum line. If you don’t clean your mouth, any remaining food particles will attract bacteria, which cause bad breath and contribute to tooth decay.
Regular checkups. Your dentist can catch any problems, such as gum disease or dry mouth, and stop them before they become more serious.
For dry mouth, chewing sugarless gum may be helpful to stimulate saliva flow.
Don’t ignore bad breath. Most of the time, it can easily be treated by the dentist/periodontist. If your dentist/periodontist determines your mouth is healthy, they may refer you to your family physician.
Information as per the ODA https://www.oda.ca/oral-health-basics/oral-conditions-diseases/bad-breath/
Braganza Periodontics - Peterborough Periodontist