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It looks specifically at how olfaction connects factors such as the major histocompatibility complex (MCH), chemosignals and pheromones, and chemical pathways in the brain.

If a unified conception of present research on the mechanisms of mate selection existed, a broader definition and scope of attraction could be developed.

This would promote collaborative investigation and aid in a holistic understanding of how both the human mind and body work.

These processes, made possible through olfaction, work together to influence how humans select their mates.

Introduction Attraction is a billion-dollar industry. People around the globe frequent online-dating websites, speed-dating clinics, matchmakers, and more, all in the hopes of finding “the one,” their perfect partner.

Most humans experience some form of physical attraction, yet most of the time they cannot rationally explain its cause.

Attraction has become a mystery attributed to fate or luck.

What society has considered beautiful or attractive in the past is not necessarily what is considered beautiful in the present.

Attraction and beauty are not constant ideas, but rather fluctuating concepts based on popular culture and social norms.

Is love at first sight real, or is it simply science?

In recent years, researchers have found that olfactory-based biological processes play an important role in the mate selection process not only in animals, but in humans as well.

These scent profiles, in conjunction with other biochemical processes, such as the production of chemosignals and pheromones, increase levels of sexual responsiveness between well-matched individuals and maximize the potential for successful mating1, 6, 9, 10.