N. A. Litvinova - Dr. Sc. (Biol.), Professor, Department of Human and Animal physiology and life Safety, Kemerovo State University, Russia. E-mail: litvinca@kemsu.ru
V. V. Traskovsky - Post-graduate Student, Department of Human and Animal physiology and life Safety, Kemerovo State University, Russia. E-mail: traskovskyi@mail.ru
O. V. Bulatova - Ph.D. (Biol.), Associate Professor, Department of Human and Animal physiology and life Safety, Kemerovo State University, Russia. E-mail: olgakemsu@mail.ru

Analysis of the current literature confirms the position of many authors who point to the role of chemical signals unjustified neglect of social interaction of people [1]. Currently smells begin to be considered as additional signal factor shaping sexual motivation [2]. Any changes in the body caused by stress, diseases, are reflected on the individual smell and affects on the attractiveness at the olfactory testing [3]. Now days the searches have been appeared, concerning the changes in the activity of the cerebral cortex in response to presentation of olfactory stimuli [4, 5]. In this connection, the purpose of the work is: to learn the influence of sexual experience of young men on the subjective and objective evaluation of intact and mask the smell of girls. In research by donors of odors there were girls. Collect olfactory samples was conducted in two phases of ovarian-menstrual cycle, using perfumes and without it. The young men having different sexual experience were recipients of odors. Young people during the olfactory test subjectively evaluated the strength and attractiveness of odors. We found a change in electrical activity of a brain at then in response to the presentation of the same odor. Individual sensitivity to odors in young men depends on their sexual experience. Young men leading a regular sex life, significantly better (p < 0.05) could smell girls (natural and mask) in comparison of young men without sexual experience. They mark natural odours as more intense. Smells girls who used perfume are more attractive to all young men, especially in the ovulatory phase of the ovarian-menstrual cycle. Girls applying perfume with pheromones increase their appeal to young men who were sexually active. Young men did not have sexual experience attractive smells girls used perfume with pheromones in the ovulatory phase. Electrical activity of the brain in rest differs significantly (p < 0.001) in young men with different sexual experiences. As thou change in the electrical activity of the brain, upon presentation of olfactory stimuli, accompanied by a decrease in spectral power in the high-and low-frequency range of alpha for all young men. Comparing EEG reaction young men in response to the presentation of natural smells of girls and odours disguised odorants (perfume or perfume of pheromone) showed that individual smell remains the dominant component of the change electrical activity of brain. That is why, we consider that the objective and subjective assessment of smell, at the young people are different, and depends on social experience of the individual affects the subjective evaluation.