Research suggests that pheromones, or scents emitted by the body, may play a role in attraction and love. The relationship between pheromones and attraction is complex, and factors such as birth control and individual senses of smell may influence who people are drawn to. The science behind pheromones and their impact on love and sex lives is being explored, with some studies examining the effects of pheromone perfumes and the brain's chemical response to attraction.