Yes, yes. Like, after the reveal, every other day probably comes with a random moment of revelation, 'ohhhh, so that's why he did that.'

But the scent thing is probably weird enough that Foggy's hesitant about it at first. So maybe he tries to test it. Like offering Matt a scarf and seeing if he picks the one he wore yesterday or the one that's been hanging on a hook. (guess which one he picks.)

That, or maybe he catches Matt passed out with his face buried in the lining of Foggy's coat. And it's maybe not the first that's happened, but now Foggy has context.