Lets get nerdy. The good and nerdy folks over at compoundchem.com posted a pretty cool article titled “The Chemical Compounds Behind the Aroma of Coffee.” Here’s an excerpt. You can read the entire article at http://www.compoundchem.com/2015/02/17/coffee-aroma/.
“Whether you’re a coffee connoisseur or completely unfussy about the manner in which you get your caffeine fix, there’s no denying that the smell of freshly-brewed coffee in the morning is an invigorating one. The chemistry behind this aroma, though, is far from simple; a complex collection of chemical compounds are responsible, and this graphic takes a look at a selection of these.”