The scent of fresh-cut grass, your mother’s rooster soup or burning leaves could immediately transport you to a distant reminiscence, one you may out of the blue recall with razor-sharp readability.

So-called odor-evoked reminiscences typically come together with highly effective feelings and are identified to activate the “neurolobiological substrates of emotional processing,” in response to neuroscientist Rachel S. Herz, an adjunct assistant professor of psychiatry and human conduct at Brown College.