Perfumes are commonly used to cover body odour, or to provide a positive, attracting,and interesting impact, or a smell that belongs to a social group. A role in sexual communication of such non-pheromonal olfactory cues has been suggested in the literature. However, there remain the questions whether these stimuli are involved in human chemosexual communication and, if so, at what level, and whether they interact with other sensorial modalities, in particular vision. To answer these, we investigated the influence of male and female perfumes as non-conscious stimulation during visual assessments of a range of facial qualities across and within the sexes. The female subjects were in their ovulatory phase, to avoid changes in perception across the menstrual cycle. Our data indicate that non-pheromonal olfactory cues are potentially involved in mate choice and may elicit strong hedonic responses that can dominate visual signs, with a cross-modal interaction.
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