Historical linguists have managed to uncover two different Proto-Indo-European words for "to fart," the one meaning "to fart loudly" and the other meaning "to fart quietly." Meanwhile, Proto-Indo-European words for "eyelid" and "poetry" remain elusive.
If you're wondering, it's */perd-/ "to fart loudly" (c.f. Eng. fart Avestan pərəδaiti, Sanskrit párdate, Greek πέρδομαι) vs. */pezd-/ "to fart softly" (c.f. Lithuanian bezdė́ti, Greek βδέω, Latin pēdere.)