Halitosis, the transient bad breath that everyone develops occasionally, is usually a trivial problem caused by certain foods or drinks, smoking or poor dental hygiene.
Often, a chemical in food is responsible. For exmple, bad breath can be caused by consumption of onions and garlic, due to their high sulfur content. Moreover, residues of wine, beer and many other alcoholic drinks produce a lingering breath odor, and tobacco in any form makes the breath smell stale.
Most bad breath can be easily remedied by good dental hygiene, eliminating offending foods from the diet, and abstaining from alcohol and tobacco.
How to Prevent Bad Breath:
Cut down on sticky sweet foods to reduce plaque
Avoid garlic, onions and other foods with strong odor
Consume plenty of H20