If you like the smell of your partner's skin without perfume or cologne, most likely you are soul mates.

This concept is essentially just pheromones in action. Science explains that it is a subconscious attraction to the natural scent of someone you will have offspring with.

Although still partly a mystery, pheromones have been defined as substances secreted in our body odor that attract certain people based on genetic compatibility.

According to a study published in the medical journal "Brain Science", you may be more attracted to one person's scent and pheromones than another because that person's DNA is different from yours in ways that are optimal for reproduction.

Essentially, human beings are subconsciously attracted to other human beings who would make a genetically good reproductive match. Body odor attraction is about judging a partner in terms of physical health and who is most likely to produce healthy offspring with you.