Can you even walk?

[ Humans can be delicate, can't they? And beyond that, if he feels ill, then it may be more likely that he encounter something problematic.

Though... No demons will bother him, given the marks and scent emanating from him. And since he's human enough, surely others won't bother him. ]

You should be safe enough to wander on your own, but I'd hesitate on letting you go too far on your own if you're not well enough.