i do NOT know where you got that information from, but if you ever come across it,let me know.
i have never heard that but it was very interesting.
i bet pheromones do play a part here, but then i would guess they would “think cheating” if they smelled cheating, which might only be the female producing more copulins in response to another male,or her own? does he smell androstenone (hmm maybe not, she produces some) or 'rone where he shouldnt?
godhand, now you made me think