pheromone -- Isabella, Jack, Sam, Willie, Hayden

pher·o·mone  (fr-mn) n. A chemical secreted by an animal, especially an insect, that influences the behavior or development of others of the same species, often functioning as an attractant of the opposite sex. [Greek pherein, to carry; see bher-1 in Indo-European roots + (hor)mone.] phero·monal adj.

The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

My teenage niece and nephews are not bugs but have reached the ages when their pheromones are in full function.