system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: using steel to get rid of smell

When I wash my hands with water and soap after handling fish, cutting onions or spilling gasoline, the smell doesn't go away. When I rub my hands agains steel, like the sink that I have in my kitchen, the smell is gone. How does that work?
gpt
Some smells (Garlic, fish, onions) are because of sulphur (sulfur) based chemicals/compounds.

These sulphur compounds bind with some of the molecules of the steel (chromium oxide, produced when the chromium plating on the steel reacts with water), producing new substances which do not smell as strongly.

This only works with sulphur-based smells, but those happen to be some of the strongest smells to a human nose.