Nothing except a gorgeous face, outfit, or dog can so sharply turn our heads as we walk down the street. Nothing so inspires us to follow our noses to the food truck, the backyard barbecue, the parking lot where someone's smoking brisket in a metal drum. The tendrils of smoke reach out and pluck us from our reveries. (Of course, hidden deep in that smell is also the implicit hint of danger, a pulse-quickening, elemental shriek of volcano! or house on fire! But generations of flame tamers have quieted all that.) The aroma of fresh baked bread is attractive, but we can't see the effusions of the bakery the way we can see smoke. Its smell and sight—and the promise of taste—excites a range of nerve endings at once. It's the perfect synesthetic experience.