Inflammation of the tonsils can cause bad breath, mainly because the inflammation of the tonsils is relatively heavy, so there will be purulent secretions that accumulate in the tonsillar fossa or in the glandular ducts, so the purulent secretions will have a foul smell, and inflammation of the tonsils will also manifest as bad breath. So for inflammation of the tonsils and pus, it is usually best to gargle with light saline or compound chlorhexidine gargle, which will reduce bad breath. In addition, some tonsillitis will form chronic inflammation, so some old pus plugs will be hidden in the tonsillar fossa, once the body’s immunity or fire will be easy to induce.