The smell of dark chocolate might do more than make people think about dessert. Participants were exposed to one of three samples: melted dark chocolate containing 90% cocoa, melted milk chocolate containing 60% cocoa, or water with no food smell. Dark chocolate had the clearest effect on appetite. Dark chocolate, for example, may be associated with a rich and filling food. For now, smelling dark chocolate should not be considered a replacement for proper nutrition, rest or evidence-based training.