I'd suggest you scrub your bilges. I'm not talking about pouring some bleach in and washing it around... I mean get a sponge on a stick and use something like pinesol to get in there and really wash it out with some vigorous scrubbing. Don't forget to get up and around areas you can't see. Also wash around through the small liber holes using whatever means works for you.
Then take Clean Potties / Raritan KO and mix a 50/50 mix with water in a spray bottle and then spray all over the bilge.
Put some fans in there and let it dry out nice a good.