I don't know, I think the word "queefing" sounds rather refined! Sort of like "quaffing" a glass of sherry? Also the word queefing (not the act) sounds like "squeaking", which is cute. The word "fart" sounds way more gross (and in fact IS!).
Whether doing yoga, or on a bike, or during sex, sometimes...

Queefing happens. (a new bumper sticker for bikes?)

Lisa
(When I was in Quebec last year people called me Lise in French (sounding like "leez") -I wanted to change to Lise permanently!