βορβόρῳ δ' ὕδωρ λαμπρὸν μιαίνων οὔποθ' εὑρήσεις ποτόν → once limpid waters are stained with mud, you'll never find a drink
Ar. and P. πνίγειν, ἀποπνίγειν.
Met., check: P. and V. κατέχειν.
smother with smoke: Ar. τύφειν, ἐντύφειν.