There are five ways to judge whether you have bad breath. Let's talk about it first. The first way is to judge the saliva. Wash your hands first, and don't leave any other smell. Then you can lick the back of your hand with your tongue. Wait about 15 seconds. After the saliva is dry, we can smell the back of the hand to see if there is any odor. If there is, it means that there is bad breath.

The second way is to breathe. We can cover our mouth and nose with our hands, then exhale the gas through our mouth, and then smell it through our nose. If you don't smell anything else, it means you have no bad breath. If you smell something else, it means you have bad breath. Now many people wear masks, so wearing masks is also a very good test method.

The third way is to use a cotton swab to wipe the root of your tongue. If the cotton swab you inserted is yellow, it is likely to have bad breath. There is a fourth way, that is, look in the mirror, stick out your tongue, and observe carefully to see if there are any white secretions on the inside of your tongue. If there are, it means that you have serious bad breath.

The last method is also the fifth method, which can be removed by flossing. First, we floss to remove some dirt from the teeth, and then clean the teeth. After cleaning, let's floss to get the gap between teeth. If you find that the gap between teeth is smelly at this time, then you have bad breath. These five methods can be used to test whether you have bad breath.