It has been hypothesized that some men and women who naturally attract everyone around them have high levels of natural active human pheromones. Pheromones secreted by females have been known to relax men, Female pheromones, like male pheromones, are known to relax men and intensify their sexual desire.
A number of studies are being conducted on this interesting phenomenon, which highlight that we smell best to a compatible mate, who has a markedly different genetic constitution. This indeed is the basis of evolution and the key to manufacturing stronger and healthy children.
The complexity of sexual behavior in terms of unpredictability poses serious constraints on human pheromone research. This is markedly different from sexual behavior in insects, which is stereotyped, and highly predictable. Active research being done at the moment however continue to promise hope in unraveling the chemistry of sexual attraction between men and women.