>We cannot say that this is a pheromone,” says study author Noam Sobel, a neuroscientist at the Weizmann Institute of Science. “But we can say that it’s a molecule expressed by the human body that influences human behavior, specifically aggressive behavior, in a predicted manner.”
I think the distinction is - is enough of it excreted that it can be transfered between people (or babies and people) or it just something that is made internally and just affects yourself,in which case it wouldn't be a pheromone.
so... a pheromone?