pheromone
noun
- secreted or excreted chemical factor that triggers a social response in members of the same species
Wiktionary
noun
Etymology: From φέρω (phérō, “I bring, bear, carry”) and hormone.
- A chemical secreted by an animal, especially an insect, that affects the development or behavior of other members of the same species, functioning often as a means of attracting a member of the opposite sex.