Everyone secretes a hormone (generally, we transliterate it directly as hormone) to form their own unique physiological smell, which is usually called body fragrance, and professionally called pheromone or pheromone. In the Journal of the National Academy of Sciences in the United States, the research team from Karolinska University Hospital in Sweden confirmed through experiments that there are hormones in human body odor that attract lovers, which will directly cause the human brain to react and produce sexual impulses. AND they extracted two kinds of testosterone derivatives, called "AND and EST".