>>2940201
>attract a ton of fruit flies and annoy them
Not sure how you got that idea. Fermentation smells of yeast which to me is about as annoying as freshly baked bread (not at all). Nor does it attract a ton of fruit flies.

Pic related airlock with active carbon to reduce smell. Used by people who do sugar washes with turbo yeast for distillation and that shit can smell bad. Never tried myself so can't attest to how effective it is.

Note that the S shaped traditional airlocks do make some sound when bubbling but the type in the pic is near silent. I've got that model without the filter and it's very quiet, moreso than the more common (acrylic? all clear) 3-piece airlocks.