In Obsession, the cloud creature is said to leave a scent. When it is predatory, it leaves a sickly sweet scent. Later, when the creature attempts to feed on Spock and is forced to retreat from the ship, Kirk notes the scent is different, and that it leaves him with an impression in his mind that the creature is returning "home."
Is the scent supposed to be a unique and alien form of communication?
Is the scent supposed to be a unique and alien form of communication?