Moriarty mused about that for a few moments, running his hands over Khan's face, hands, body...

"You're very likely right about all that. I've definitely started reacting to your pheromones well before my body had any way of doing something about it. Hypersensitive, perhaps. I bloody well felt like I was hit in the face with a brick when I got to your rooms."

Perhaps Khan had reason to refrain from biting but Moriarty didn't. Halfway through the next long lick he pressed his bared teeth against the side of the Alpha's neck. It wasn't any kind of show of aggression, he didn't even bite down, it was simply meant as playfully erotic.