I think the line is 'what we have here is a failure to communicate'.
[He likely can smell that the teenager is a werewolf himself, and considering the fact that Isaac is currently living in an abandoned subway, though he's been keeping himself cleaned and impeccably well groomed, the scents on the teen would, were they from the same universe, indicate 'bone gnawer', though in Isaac's own world there weren't such distinctions between werewolves.]
no subject
[He likely can smell that the teenager is a werewolf himself, and considering the fact that Isaac is currently living in an abandoned subway, though he's been keeping himself cleaned and impeccably well groomed, the scents on the teen would, were they from the same universe, indicate 'bone gnawer', though in Isaac's own world there weren't such distinctions between werewolves.]