Halitosis is an oral malodor or bad-smelling breath that occurs due to localized dental and oral issues like plaque deposition, teeth cavity, unclean dentures, food, smoking, alcoholism, medications, gastric problems, systemic disorders, delusional, etc. Based on the etiology, the malodor varies. It is a kind of rotten egg smell in an oral cause, fishy odor in kidney failure, fruity in diabetes, and sulfur smell in liver disease.