According to a Yale University study cited by Salon.com and Crayola.
At first glance I saw baby powder and cigarette butts back to back and thought for a split second that they'd listed "baby butts." "Yep," I thought to myself, "That's a recognizable scent all right." The first time I changed my child's diaper was an eye-opening (and sinus-opening) event. I was one of those guys who had never changed one before. Hoooooo doggy. I spied the carnage in that newborn-sized Pampers and turned to my wife.
"Did you feed her a sloppy Joe?"
And the smell. Sweet hot Jesus.
"Is that normal?" I said. "I think she might be sick or something."
She laughed. "Nope. Normal."
"Fuck. Me. Sideways. That shit ain't right. She gonna be doing this a lot?"
"Yep," says the Mrs. "And so are you."
2. Peanut butter
3. Vicks VapoRub
5. Wintergreen oil
6. Baby powder
7. Cigarette butts
9. Dry cat food
11. Ivory bar soap
12. Juicy Fruit gum