Bad breath in medical terms is usually called halitosis. Halitosis is a condition in which a person emits bad breath that comes from the mouth.
Usually there are several possible causes of bad breath, it can be from external factors or internal factors in the body. External factors such as leftover food in the mouth. Meanwhile, internal factors mostly come from dental and oral problems, including cavities, tartar, gum disease, cracked teeth, dentures that are not kept clean, and reduced saliva in the mouth (xerostomia).
What if it turns out that the cause doesn't come from within the mouth? There is a possibility that it can come from other parts of the body such as allergic conditions, chronic inflammation of the respiratory tract, indigestion, and several other internal diseases.
Well, What is a simple way to find out that our mouths smell?
Lick the outlined part and wait a few moments until it dries. After the licked part has dried, then hold it close to the nose and breathe. If your wrist smells, you might have bad breath. Do not try this method right after brushing your teeth. Wait about 1-3 hours after brushing your teeth.
The important thing is not to take too long to smell your wrist, the odor does not linger.
Last one, actually bad breath is not a disease, but a symptom that the cause must be known. If it turns out that this problem is caused by oral health, don't be lazy to keep your teeth and mouth clean by rinsing with mouthwash. But if bad breath doesn't go away, I suggest that you go to the doctor for a consultation.