οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old
P. οὐδενὶ κόσμῳ, ἀτάκτως, χύδην, ἀναμίξ, P. and V. εἰκῆ, φύρδην (Xen.), or use adj., P. and V. συμμιγής (Plato), σύμμικτος.
they scattered all pell-mell: V. πάντ' ἄνω τε καὶ κάτω διέφερον (Euripides, Bacchae 753).