The power of smell is undeniable… humans are influenced by airborne chemicals undetectable as odors, called pheromones. Researchers from all over the world say that humans produce and react to pheromones. Scientific studies have actually shown that subjects who used synthesized pheromones had sex more often. Pheromones can improve one’s sex life, because pheromones send out subconscious signals to the opposite sex that naturally trigger romantic feelings.