pheromones

/F EH1 R AH0 M OW0 N Z/
noun
  1. 1

    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.

Source: https://en.wiktionary.org/wiki/pheromone, https://en.wiktionary.org/wiki/pheromones