Have you considered reading the article? Sound smile a strange comment making for the subject.

Having confirmed the effect of sniffing tears on men’s behavior, the researchers are keen to expand their research.

“When we looked for volunteers who could donate tears, we found mostly women because, for them, it’s much more socially acceptable to cry,” Agron said. “Now, however, we must extend this research to include women to obtain a fuller picture of this impact.”

From the study itself

Moreover, although we tested tears from women donors, we speculate that all tears would have a similar effect. This becomes particularly ecologically relevant with infant tears, as infants lack verbal tools to curb aggression against them and are therefore more likely to rely on chemosignals.