Unfortunately my head is on the opposite side of the boat from the sink, so that couldn't be easily implemented, and it's really not THAT much of a problem anyway. When we take guests out after the boat has been sitting, as part of opening up the boat I usually open the seacock and give it a few pumps, and pour a bit of KO in the bowl. That takes care of it.

As for "OdorSafe" you of course are right. I just looked it up on the Defender site: It's Trident XHD white hose. I tend to lump these together in my simple mind, because to me they look to be a similar material and construction.