It is necessary to mention some foods that give a bad smell in the breath of the eaters such as onions, and this problem was solved in part with the leaves of lettuce, which go slightly odor because of the contain chlorophyll. Due to the reluctance of some of the onion intake, we would like to mention its important nutritional value and its ability to kill endemic germs in the mouth and intestines and has been shown to contain iron, phosphorus and vitamin A in ample quantities. As for garlic, it is the onion in terms of the ability to kill bacteria because it contains alesin and is rich in phosphorus and calcium, which makes him a stimulant.