Chemistry
Chemistry: we're all made of it, and we for some reason don't want it in our food. Chemistry turns grown people into witches and tells us Sprite can cure a hangover. Who are we to question science, especially when we're so willing to test the hypothesis?
Hey, tangentially related—you ever watch Breaking Bad? It's this obscure indie TV show starring the dad from Malcolm in the Middle as a chemistry teacher, goes on some wacky adventures. Anyway, cooking illegal drugs in real life sounds like a nightmare. Use your chemistry knowledge for good.