Orion pheromones

Pheromones produced by Orion females.

A pheromone was a chemical secreted by a lifeform, that had an effect on another lifeform.

Locator bombs worked by homing in on an individual's pheromones. (DS9: "The Nagus")

Orion slave girls secreted a highly-potent pheromone that accelerated the metabolisms of males of many species, raising adrenaline production to dangerous levels. It caused aggression and a form of delusion that made them susceptible to suggestion. The pheromone caused headaches in Human females and disrupted the sleep cycle of Denobulan males; Vulcans, however, were immune. The pheromone's effects were cumulative: the longer one was exposed, the more pronounced the results. In 2154, Dr. Phlox of Enterprise NX-01 theorized that the pheromone acts as a defense mechanism against competition. (ENT: "Bound")

In 2370, Captain Picard used pheromones from Deanna Troi to lure Worf while they all suffered from Barclay's Protomorphosis Syndrome. (TNG: "Genesis")

Ramurans produced pheromones that prevented the formation of long-term memory engrams in other species they interacted with. (VOY: "Unforgettable")

In 2375, One, an advanced Borg drone with 29th-century technology, detected an elevated pheromonal response in a USS Voyager crew member, indicating that she was afraid of him. (VOY: "Drone")

Queen Arachnia pheromone vial

Queen Arachnia's pheromone vial

In The Adventures of Captain Proton holoprogram, the character of Queen Arachnia had in her possession a small vial of her pheromones, which she could use to seduce and control others. Kathryn Janeway, as Arachnia in 2375, used these pheromones against the character of Lonzak. (VOY: "Bride of Chaotica!")

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