I love the smell of grain, too! Funny story... I work at a summer camp, and one of the kids decided she liked the smell of it so much, she'd eat some. One small problem... she was eating it off of a dog carrier which we had in the chicken coop, and had been covered in chicken poop recently. We'd hosed it off but we hadn't disinfected it yet. Yuck! She was OK, fortunately.
I think I like the smell of (good) hay better though, it reminds me of the smell of spaghetti and whenever I feed hay I ALWAYS crave spaghetti after that! Although maybe that's just because when I was a kid, we had spaghetti for dinner after my lesson every time (since my mom was always too busy to cook a big meal after driving me all over).