Most of the bad smell comes from volatile sulphur compounds, gases with distinctive odours. Hydrogen sulphide, with its classic rotten eggs smell is one of the main offenders, but even worse is a substance called ethyl mercaptan which tends to be described as smelling of decomposing cabbage. It’s the compound which makes some people’s urine particularly pungent after they’ve eaten asparagus.
For stones that do not go away on their own, there are several types of treatments: Medications: Antibiotics to help reduce bacteria Antihistamines to reduce mucus from sinus problems or allergies Laser treatment (laser tonsil cryptolysis): a noninvasive treatment that helps minimize or remove the tonsil pockets (crypts) where the tonsil stones are lodged Coblation cryptolysis: radio waves are used to change a salt solution into charged ions that can cut through the tissue to reduce crypts on the tonsils and eliminate tonsil stones Tonsillectomy: removal of the tonsils, usually the last resort but the only way to eliminate tonsil stones and prevent new ones from forming

For decades after Listerine first hit the market in the 1880s, it was kind of a jack-of-all trades product. Originally invented as a surgical antiseptic (and named after the founding father of antiseptics, Dr. Joseph Lister), its uses were varied—they including foot cleaning, floor scrubbing and gonorrhea treating.
You don’t have to live with chronic bad breath – a medical condition known as halitosis. There are ways to prevent it and eliminate bad breath once and for all.