"Further, whether consciously detected or not, each individual gives off a slightly different scent thanks to something known as the Major Histocompatibility Complex (MHC). Studies, such as one having women smell the armpits of t-shirts previously worn by various men who in turn wore no deodorant or the like, have shown that people with dissimilar MHC feel more attracted to each other (and, in fact often become aroused when catching a whiff of such a person). While the research is not yet wholly conclusive, there is even some evidence that when these two with such differing MHC make a baby, they can expect a lower than average rate of miscarriage. It is also thought that greater genetic diversity results in offspring being less susceptible to disease, both suggesting an evolutionary benefit to heading what your nose is telling your brain about a person based on apocrine secretions."
This part was really good. It actually reminded me of a documentary based upon an experiment the Swedes had done a few years ago which proved exactly the same thing.
On the other side, a lot of sociological studies tend to prove that we choose people similar to us based on social and cultural signs. There lies a dilemma.
