One of the classics when it comes to bad breath. We all have to eat, which means we all have to put food in our mouth. Food can get stuck between your teeth and other places in your mouth. These leftovers cause both plaque and tartar, which are both bad for your breath.
The nasty thing about this is that your mouth has the ideal temperature for food to decompose and bacteria to flourish. Can you guess what that can and will cause? Yup, bad breath.
