the vatican is key
a similar experiment was done by having women smell men's sweaty tshirts. they would pick the one that smelled most attractive to them… and the majority of the time it would be to correct match in terms of genetic compatibility.
(basically women have the ability to smell and sense a good compatible mate in terms of fitness to produce healthy offspring)
the crazy part is… there were a specific group of women that couldn't pick the right mate based on smell
it was the women who were on birth control
so single chicks running around on birth control and then eventually meet dudes are doing so without tuning into their powerful evolutionary sniff test. no wonder we have so many mongoloids and developmentally challenged people running around nowadays