Perhaps he's not nearly so easily fooled after all, no. Ianto glances up at the other man from out of the corner of his eye, knowing that he's been caught in the act, a bit sheepish, but not overly so. He doesn't regret fussing over John, after all. He'd rather do so and suffer the consequences of it than suffer the consequences of not doing so.

He flicks him the hint of a smile -- see, he hasn't entirely forgotten how to do that too -- leaning in to bump his shoulder in return as they walk.

"Heaven forfend," Ianto quips in return. He does not speak up to point out whose fault that might be, however. Gathering his thoughts for a moment instead before continuing, "I think you've spent enough time doctoring other people today, without adding myself to the list. Not that I don't appreciate your concern."