Pheromones are chemical signals released by an individual that can affect the behavior or physiology of others of the same species. They play a crucial role in communication, especially in the animal kingdom, where they can signal danger, mark territory, or attract mates. Pheromones are detected through the vomeronasal organ, which is sensitive to these chemical cues. In humans, the role of pheromones is still being studied, but some research suggests they may influence attraction and social interactions. While the existence of human pheromones is debated, they are thought to contribute to subconscious preferences and emotional responses, similar to how they function in other species like dogs and insects.