system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does looking at a bright light help with sneezing?
gpt
It can trigger what's called the photic sneeze reflex. This reflex makes some people sneeze when they look at bright lights. The exact mechanism by which it works isn't fully understood. It's also genetic, so only people with the gene for it will have that reflex.