Ever wondered why cooking bacon just seems to appeal to just about everyone? YouTube science channel Reactions uses some facts and figures from chemistry blog Compound Interest to explain why bacon smells so good when it is being cooked.

One of the reasons is due to the Maillard reaction, which is the same chemical reaction that causes bread to turn brown while it’s baking.

There are over 150 organic compounds that contribute to the sweet smell of bacon. Check out the infographic below: