A pheromone is a secreted or excreted chemical factor that triggers a social response among members of the same species. Chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual are called pheromones (MedicineNet Inc, 2012). To complex multicellular eukaryotes from basic unicellular prokaryotes, pheromones are used (Kleerebezem, M Quadri, LE,2001). There are 6 common types of human pheromones: androstatrione, androstenol, androstenone, androsterone, dehydroepiandrosterone, and estratetraenol. Androstadienone (androsta-4,16,-dien-3-one) is a chemical compound that has been described as having strong pheromone-like activities in humans (Wyart C, Webster WW, Chen JH, Wilson SR, McClary A., Khan RM, Sobel N, 2007). It is a metabolite of the sex hormone testosterone: however, androstadienone has no known androgenic or anabolic effects. Although it has been reported to significantly affect the moods of heterosexual women and homosexual men, it does not overtly alter behavior (Lundström JN, Olsson MJ, 2005), although it may have some effects more subtle on attention (Hummer TA, McClintock MK, 2009). ).Pheromones are detected by the regular olfactory membranes, but also by the vomeronasal organ (VNO), or Jacobson's organ, which is located at the base of the nasal septum between the nose and the mouth and constitutes the first floor of the accessory olfactory system (Pantages E, Dulac C, 2000). The epithelia of the vomeronasal organ may serve as a chemical sensory organ; however, the genes that encode VNO receptors are nonfunctional pseudogenes in humans (Karl Grammer; Fink, Bernhard; Neave, Nick, 2005). There are also some when the sensory neurons are middle of paper......r, even if the signal is the same for both sexes, the responses are not necessarily – and should not even – l 'be. An attractive, dominant male may be a valuable potential mating partner for a female, but for precisely the same reason, a competitor for another male. Pheromones can also affect our behavior and emotions. For example, pheromones can make us fall in love with someone and without us knowing it, it makes us do whatever it takes to have that person and be with that person. Pheromones can also make someone happy, sad, hate or love. Pheromones can also increase skin conductance, electrocardiogram, finger pulse, ear pulse, blood pressure, abdominal respiration and thoracic respiration, decrease skin temperature, activate the brain, increase sexual attractiveness and affect a person's mood. Most pheromones come from our body and most often from our sweat..