Tonsil Stones (Tonsilloliths): What They Are and Why They Smell

Tonsil stones (tonsilloliths) are small, foul-smelling calcified deposits that form in the tonsillar crypts. They consist of trapped debris (food, dead cells, bacteria) that hardens over time.

They cause halitosis (bad breath), sore throat, foreign body sensation, and sometimes ear pain. Usually harmless, they can be removed by gentle irrigation, cotton swab, or coughing. Recurrent or bothersome stones may warrant tonsillectomy.