This will enable us to determine the things your child should avoid and the things your child should do to prevent the occurrence of bad breath. There are 4 major causes of bad breath in children: xerostomia, periodontal diseases, nasal infection, and poor oral hygiene. 1. Xerostomia (dry mouth). Dry mouth breeds bacteria. There are also foods and beverages that could cause bad breathe. Some of these food work by leaving trace odors inside the mouth while others would promote higher acidity level. Smoking also contributes to the development of unpleasant smell. Aside from the smoker's breath, substances such as nicotine, tar and odor-producing compounds could accumulate in the soft tissues of the mouth and the area surrounding the teeth. Bad Breath Cure Myths Myth #1 Commercial mouthwashes effectively cure bad breath. A typical commercial mouthwash contains alcohol which can actually contribute to the formation of more venues for bacteria to breed and cause bad breath. This is because alcohol causes the mouth to dry, and bacteria breeds quickly on dry mouth; becoming more powerful to produce volatile sulfur compounds (VSCs) that produce bad breath. Poor oral hygiene can result to the increase of anaerobic bacteria that break down sugar and protein from the food particles left inside your mouth, particularly in between your teeth and at the back of your mouth. This would then result to the production of volatile sulphur compounds (VSCs), which would then be the cause of bad breath. Other reasons why people suffer from chronic bad breath are regular intake of food, drinks and products that either degrade the quality of air you breathe or help produce more bacteria inside your mouth. One example is dairy product. At first there you can argue that dairy products are rich in protein. Spoon Well if you don t bother to do anything to remedy your bad breath, but you don t have a tongue cleaner, then why not use a tablespoon? It works fine in scraping that white/whitish thing off your tongue. Pineapple juice If you are bothered with the garlic after taste, drinking pineapple juice will work for you.