Why Does Soda Burn My Throat

Why does soda irritate my throat?

Enzymes in the mouth convert the carbon dioxide into carbonic acid. The acid stimulates nerve endings, activating pain mechanisms that cause a mild irritation, or “bite.”

Why does it burn when I swallow soda?

The carbon dioxide in fizzy drinks sets off the same pain sensors in the nasal cavity as mustard and horseradish, though at a lower intensity, according to new research from the University of Southern California. “Carbonation evokes two distinct sensations. It makes things sour and it also makes them burn.