οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old
sēmet: v. sui.
sēmĕt, acc. et abl. de suimet, soi-même.
sēmet = se, s. sui.
semet. acc. et abl. v. suimet. (se. met.) :: 自己