Here ya go:
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems
and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/store/custo...0&cat=6&page=1
http://shop.sailboatowners.com/detai...=400&group=327

Also, I've used ozone generators in the past to get rid of nagging
odors, although their use is controversial. Just don't overdo it. Plain
old good ventilation will do wonders as well.