Barry has doubts about that, but doesn't comment.

Instead he shakes his head to Yamato's offer.

"No, I metabolize them out too quickly," he says, his own tone not softening much. "I'm gonna go get cleaned up, grab a shirt. Cisco has another suit around here so I'll find that. Gonna need it when we go after this guy."

With that Barry exits, still holding his arm he speeds off to other parts of the compound to change and maybe give himself and Yamato a minute or two.