Food habits can be the main source for bad breath. It is due to degradation of protein by the bacteria and all food products rich in protein favors bad breath. Meat, fish, milk products, eggs, cakes, nuts, and etc. can cause bad breath . Some food particles can produce particular type of smell which may be unpleasant. Raw onions can produce typical bad smell. It is said that an apple a day keeps the doctor away, a raw onion a day keeps everybody away. Eating ground nuts can also produce bad smell. However if proper cleaning is done smell can be reduced regardless of the nature of food. Irregularity in timing of food can also produce bad breath. Small food articles taken in between the meals can also produce bad smell.
