That odors play a significant role in subhuman intraspecies communication is a generally accepted fact explained in part by the production and reception of species specific pheromones. Recently the effects of human produced odors on human communication have received research attention, particularly in the communication of such biological phenomena as menstruation onset and gender assignment. Again pheromones have been posited as the explanatory mechanism. Whether a pheromone-like odor cued process exists in the communication of human emotions is unknown, though a number of anecdotal accounts of odor-emotion interactions suggest that such may be the case. It was the purpose of the present study to investigate a possible odor-emotion interaction by determining whether humans could differentially detect other humans' odor collected under varying emotional conditions.