Maurice's formatting got the better of him, I think. No, no explicit mention of pheromones, but back then pheromones were not so well understood as they are today, so not mentioning them is not an explicit "That's Not What's Going On". Mudd described the Venus drug as giving the taker 'more of what they already have'. It's known today that whether we realize it or not, we humans give off pheromones, and react to them. Maybe it is a retcon to acknowledge their role, but it seems acceptable to me to do so. Eve, probably without ever thinking it was possible to do, figured out how to get her body to respond as if the drug were present, even when it wasn't. Instead of becoming dependent on it, she got her own body to do the same thing for itself, which is the central idea of inoculation. That makes Eve a one of a kind, I think. It was the drug itself that made McCoy's scanner go 'Bleep', not its effect. That's my headcanon. From what little we learned of Childress, he may well have gotten the wife he deserved, too. After all, he's the one that went after her when she ran off. He'd just been alone for so long he was unwilling to admit how much he appreciated her being there until he saw that she wanted him regardless. The other women were shallow, but so were the other men. Eve and Childress were a couple I could see going the distance relationshipwise.