There's a few moments where Tony's just leveling the most 'are you serious?' look at Jacob, but it doesn't last. He's a bit of a jerk, at times, and still in a Mood after the whole blow up over the doppelganger but...

Yeah he knows terror when he sees it, he's felt it enough times to recognize the signs. He gives a small sigh, and thumbs over his shoulder. "Sure. Come on, just keep your head low I'll get you through 'em."

When Jacob leans closer Tony just casually tosses an arm over his shoulders, as if to tuck him close to guard him. It'll be fine, ghosts wouldn't dare touch a demon.