Clean your mouth regularly and also thoroughly; and brush between your tongue and teeth, not just to look good, but for oral health and a cleaner breath.
Two major sources of mouth odor are bacteria and decaying food particles. There are hundreds of locations in that fertile landscape of your mouth where the offending bits of “rot” can get stuck. Brushing is not enough to not have bad breath.
Clean your tongue. Your tongue, unfortunately, can be compared to a shaggy carpet with all kinds of smelly stuff that can hide in it. Suction your tongue, a little, and be sure to swish your drinks all around the mouth and between teeth to remove some of the bacteria and decaying food particles. When you brush your teeth (which needs to be at least twice a day):
Use your toothbrush to “scrape” your tongue. If you got a bad gag reflex, you probably wont like this job. You should clean your entire tongue, which includes the part close to your tonsils.
Floss. It should be a mindless habit just like brushing your teeth. When you floss, your gums can bleed as you get rid chunks of food that have lived in your teeth and gum for who knows how long. When you’re done, smell the floss, if you dare to. You will smell where that bad breath is coming from.
Keep the mouth moisturized. A dry mouth creates a smelly mouth. This is why your breath is worse in the morning; your mouth creates less saliva when you sleep. Saliva is the enemy to bad breath because it doesn’t only physically wash bacteria and food particles away, but it also contains antiseptic and enzymes that destroy bacteria.
Chewing gum increases saliva production (along with covering up the odor with another kind of scent). Mints do not increase the saliva production.
Drink water and swish the water between your teeth from side to side. While water won’t increase saliva production, it will wash out your mouth — and it’s very good for you.
Dry mouth can also be caused by some medications or medical conditions. Talk to your doctor about changing medications, or looking at the underlying condition.
Pick your gum carefully. All gum will help with getting rid of bad breath because the chewing action makes more saliva get created. While some gums got better bad-breath-fighting abilities than others:
Cinnamon flavoring can be especially effective in lowering the bacteria counts in your mouth.
Check the label for xylitol. First of all, sugar is not good for your mouth, and Xylitol is a sugar substitute that works to stop the bacteria from replicating in the mouth.
Eat a banana. You might already know to avoid notorious smelly foods like cheese, onions, garlic, and coffee (or at do some really good brushing after eating them). But did you also know that if you are on a low-carb diet, you can have “ketone breath”? As your body breaks down the fats instead of carbs for energy, it generates ketones, and some of that is released in your mouth. Unfortunately, ketones smell really bad, which will give you bad breath. If you are on a carb-restricting diet, or a diet that makes you to burn fat instead of carbs, think of adding healthy carb-rich snacks into the mix, such as apples or bananas.
Bad Breath will also occur if you fasts. If you’re anorexic, bad breath is just one of the many reasons to stop starving yourself.