<human>: Is it true that if I eat too many sour sweets, I will have a bad breath?
<bot>: Yes, it is true that eating sour foods can cause bad breath. Sour foods are foods like lemons and limes, which contain citric acid. When you eat these foods, the bacteria in your mouth converts the citric acid into carbon dioxide and hydrogen sulfide. This causes your breath to smell unpleasant.