Join the conversation here. The process works by isolating the 11 genes that link to our pheromones, the chemical signals that are believed to trigger sexual attraction. The relationship between scent and attraction has been investigated by a plethora of research studies, even explaining and the expression that "Love is in the air". The site, m, works by mailing out DNA testing kits to their customers, who then spit in a tube and send it back. Pheramor gives all its users the option to consent to being part of the registry. Dating apps can be tricky to navigate, particularly when youre trying to suss out someones credibility. Does he really have a puppy? . The tests referenced on the website include an experiment at a Swiss University where males were asked to wear the same t-shirt for two consecutive nights. The two markers tested for are the serotonin uptake controller, which is involved in how people handle positive and negative emotions.