What Is It About Cinnamon?

Coming up the escalator to the main floor of Union Station (DC's main train station, which I cross through every day to get to my office), I was mugged by the delicious, warm smell of cinnamon. It was probably coming from the Corner Bakery, which was right there. But it gave me the same intense rush of pleasure that I get from the first sight of a lovely sunset, or the first notes of a favorite song.

So why is that? Is it just that I associate it with tasty treats? Or is there something deeper and more basic going on?

Answer Key for My "Name That Tune" Meme Post

Eh, I don't think anyone else is going to play. > snif! <

( Click for the answers )