system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does it burn if you burp through your nose after drinking something carbonated?
gpt
They contain small amounts of carbonic acid and there will be some of this left in the gas that you release. Your nose is far more sensitive to such things than your mouth is, so you feel the acid burning more than your mouth.

You can test this with a green chili. Place one on your tongue and place one up your nose and see which one is worse.