Bacteria that live in the mouth break down proteins in food, releasing sulphur compounds. It's these that smell. People with gum disease and dental decay are more likely to suffer.
Bacteria that live in the mouth break down proteins in food, releasing sulphur compounds. It's these that smell. People with gum disease and dental decay are more likely to suffer.
许多长期有口臭的人，是因为吸烟和过度饮酒引起的，而引起口臭的最主要原因是——不注意口腔卫生。