The correct effects of Volatiles are; Volatiles may warn nearby plants of the same species, so that they can mount a biochemical defense. They may also attract parasitoid wasps to attack an insect herbivore. Volatile terpenoids and other compounds emitted from leaves in response to insect damage allow insects parasitoids such as parasitic wasps and predators to distinguish between infested and non infested plants, and thus aid in locating hosts or prey.