There's too much going on in Steve's changing brain chemistry to register much. The human brain is a strange thing, it fills in gaps to avoid having blank spaces and so what Steve smells might be Bucky, but his mind is desperate enough to supply that with a better, more palatable reason: aftershave. It feels less strange to find comfort in that than in what is actually triggering parts of him that he'd never noticed he'd had before.

Humanity would slip from him all too quickly in the coming days. The change is not as slow as one might think, but also not completely instantaneous. That said, the way Steve looks when Bucky finds him sitting in his closet is more or less the way he'd left him.

With one small difference.

Steve's chest has been concave for as long as they've known each other. Heart surgeries tend to do that. They also tend to leave very long scars.

But when Steve stands up and hides Bucky's hoodie behind his back (like he'd been caught doing something wrong), he looks fine. He looks healthy. There are no scars. His chest his flat, almost broad. It's odd.