Causes and prevention of bad breath

Most people believe bad breath is caused by eating or drinking consumables that are especially odorous. Well for me that is partially true. Basically, all the food you eat begins to be broken down in your mouth. As foods are digested and absorbed into your bloodstream, they are eventually carried to your lungs and given off in your breath. If you eat foods with strong odors (such as garlic or onions), brushing and flossing -- even mouthwash -- merely covers up the odor temporarily. The odor will not go away completely until the foods have passed through your body. Thats what I think causes bad breath. What do you think? share with me your opinion.