other mammals needed to detect pheromones beyond a smell. Humans also lack the genetic ability to produce these sensory cells actively. There is also a specific anosmia to the odor in some humans; they are unable to smell specific odors, but have, otherwise, a normal sense of smell. However, this should, by no means, be regarded as indicative for being labeled as a pheromone, as it is true of over 80 olfactory compounds. To animals, the smell of androstenone can act as a social sign of dominance and can be a way of attracting a mate. Commercial use Some commercially available products are advertised using claims that they contain human sexual pheromones, including androstenone, and that they can act as an aphrodisiac. See also List of neurosteroids § Pheromones and pherines References Androstanes Human pheromones Mammalian pheromones Neurosteroids