Many of us see the handkerchief pressed to the face while talking. Or talking covered with hands. Or do not want to talk , such a situation! Because , he is terrified that his mouth is smelling or his breath is smelling. We call it helitosis in the language of medicine. If the teeth are not brushed properly, the teeth will be caried or the teeth will become cavities. Food is frozen here a lot of the time. This food accumulates , causes rotten plaques, and a coating on the tongue. It causes bad smell. In addition, some foods also cause bad breath. Such as onion , garlic. This smell lasts for a while. Again, if someone smokes , the odor remains. Bad breath is also caused by drinking betel nut or tobacco products. Problems in the mouth are also caused by some systemic diseases. Such as respiratory tract infections , bronchitis or pneumonia ; In that case too, there may be bad breath. If you have diabetes, you may have bad breath. There may be liver problems. In addition, those who have gastric problems , it can also be. There are many reasons for bad breath.