system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does alcohol burn on open wounds? Like what chemical process is making our pain receptors go off?
gpt
Alcohol has a strange property where it causes the receptors for heat in your skin and mouth to become more sensitive.

These receptors (VR1) normally trigger at around 42C, but alcohol causes them to trigger at around body temperature.

So the heat you are feeling is actually your own body temperature.