The Manic Mechanic

I am constantly amazed by biology, and all its similarities across its species borders. When I was in grad school, whenever we would be doing research in the lab and the lawn mowers were there, my professor would always say, "you know why people love the smell of freshly mowed lawns so much?" and we would dutifully answer, "no, tell us" and he would smirkily announce "because freshly mowed lawns smell exactly like semen!" So many plants "use" that smell at their pollenation/fruiting time; take a big sniff for me!