The honeybee is a model organism for understanding the epigenetic link from food odors and social odors to neural networks of the mammalian brain, which ultimately determine human behavior.
Nothing that I know about molecular biology indicates that epigenetic effects of non-olfactory/pheromonal stimuli directly impact the HPA axis or HPG axis of mammals, or that visual input plays a primary role in the sexual behavior of any species from microbes to man.
Few people have even considered whether human pheromone-driven menstrual synchrony affects the behavior of women or men, despite that animal models that say it must.
Perhaps viruses are calibrating all mechanisms for both individual survival and for speciation across all species. If so, shall we credit them for all of Creation? What then can be said for “The Language of God?” 1532 genes and interactions among them are required for sexual reproduction that involves the mammalian placenta.
“We have known there is some physical link, but [nerve zero] really helps to define it.