I'm getting odors from engine compartment through the storage compartments that run along both sides of boat from engine compartment to cabn. The ac picks them up and/or sucks them in and recirculates them forever.

Has anyone tried to seal those off?

odors ? seems you need to find the source .....If its on the Starboard side could it be a leak in the sewage line ?

It's probably the starboard side becasue that's where the a/c is and the compartment is opne all the way to the engine area. Not sewage--have a virgin port-a-pot. THe smell are general engine bilge smells that are kind of greazzzy, oily, fuel--general odors from engines.

I need to coles that up anyway becasue it's not helping hte a/c in this heat wave we're having and it will make the system work better this winter.