It disrupts breath in people who may not have gastrointestinal events. Tobacco and alcohol are often responsible, but sometimes no cause is found. The breath is heavy, sometimes foul. The anti-drugs and anti-acid reflux must be taken strictly on medical prescription. They are effective, especially in children.

Dental diseases

They are frequently the cause of persistent bad breath.
Cavities are often neglected to gingivitis and may complicate abscesses. All this can give off strong odors.

The retention food
Snags and teeth are hollow trap food particles that stagnate and rot slowly. Vents in very poor condition and reported by a fairly typical odor.