It’s difficult to say that humans have pheromones, because we have not yet been able to characterize specific molecules that elicit predictable interactions. Humans are really messy creatures to study, right? There’s a lot of cognitive factors that might play into the way that you respond to an odor that other animals just don’t have, but it certainly seems like we are emitting certain chemical signals that have social value.

— Jessica Gaby, assistant professor of psychology at Middle Tennessee State University. Read more in Is an irresistible human pheromone possible? at WHYY.