if you want to keep your mouth fresh do this step
1. Always keep your mouth clean, brushing and flossing every time after meals so no bad breath.
2. Drink plenty of fluid to keep the GI tract healthy so bad breath wont near you
3. Eating right, with plenty fruits and vegetables such as apples, carrots, celery and all high fiber fruit or vegetable. Based on recent study, if we serving yogurt each day can reduce the level of odor its because hydrogen sulfide in the mouth and the effect is bad breath gone.
4. Use gum to disguise or masking the odor. if you don't have much time to brushing, you can use gum. But Gum doesn't replace the brushing so only use gum when you need it or when you feel have a bad breath.
5. High C Vs Bacteria Growth. Food with high vitamin C like berries, melons, oranges can create an inhospitable environment for bacteria growth. bacteria died and so with bad breath.