It's my understanding that you and Sam also have to "go to the bathroom sometime," so I don't understand why you can't—

[ That sneeze is sudden and interruptive, and Castiel stops mid-sentence, completely losing track of what he'd been saying. ]

God bless you.

[ Human nicety. Anyway, it's been settled. Dean will keep the cat safe. The cat likes Dean. In fact, as he steps backwards, the cat rushes to follow, tail held up, and it figure-eights through Dean's legs, seemingly unbothered by the attempt at distance, or the loud sneeze. Dean's resistance seems petty in the larger scheme of things. ]

This cat needs a home, and has come to me for aid. I can't safely provide one, but you can. What else would you have me do?