Legion will not be affected, considering it is synthetic and doesn't breathe. However, it'll be extremely interested in how everyone else is acting.
AR has a crazy strong sense of justice, so he'll mostly be affected in terms of his conversations. He'll probably be more likely to admit and own up to his own feelings about things instead of politely diverting the subject away to something else. Maybe he'd also unbutton the top button on his collar or something, because that's how much of a rebel he is.