What causes bad breath?

tonsillitis, the gag reflexinflammation of the tonsils most commonly caused by viral or bacterial infection

diabetic ketoacidosis (DKA), the potentially hoerytioer life-threatening complication in patients with diabetes mellitus

Acute necrotizing ulcerative gingivitis or necrotizing ulcerative gingivitis, a sub-classification of necrotizing periodontal disease, an infection of the gum tissue

gingivitis, a term used to describe non-destructive periodontal disease

rumination syndrome, or Merycism, an under-diagnosed chronic condition

In anatomy, Zenker's diverticulum, also pharyngoesophageal diverticulum, also pharyngeal pouch, a diverticulum of the mucosa of the pharynx, just above the cricopharyngeal muscle

alveolar osteitis or, colloquially, a dry socket, a complication of wound healing following extraction of a tooth

Cysteamine (an aminothiol salt used in the treatment of nephropathic cystinosis)

arsenic trioxide, an inorganic compound with the formula

Even though zinc, an essential requirement for a healthy body, excess zinc, which can be harmful, and cause zinc toxicity

the substance of [root of: [garlic]]

Esophageal pouch (saccular protrusion beyond the wall of the esophagus)

Arsenicals (a poisonous chemical used to kill weeds and pests)

Dental sepsis, the cause and medical condition with DiseasesDB code "3581"

Dentures (removable dental prostheses designed for replacement of some or all the teeth in either the upper (i.e., maxilla) or lower (i.e., mandible) jaw)

Methionine adenosyltransferase deficiency, the cause and medical concept with DiseasesDB code "29837"

pharyngeal pouch, an uncommon pathological outpouching of the pharyngeal mucosa through a weak area of the pharyngeal wall