As Paul pointed out earlier even the best hoses eventually pass at least a little odor
albeit much less than cheap
hose. I have both types of hoses in two heads and do prefer the more expensive hose.
To deal with what odor
"happens" I thouroughly clean the entire head
area including the entire surface areas of the intake and exhaust
hoses as well as the surfaces in the hose and head
space with a cleaner such as "Magic Bubbles" or even just Clorox wipes.
Then I spray the hoses with Febrez fabric
freshener (the light blue bottle). There is a Febreze "extra strength" for heavyweight fabrics in a white bottle but I don't like the perfume from that formulation (I don't like perfumes at all, especialy those obnoxious things people use in some attempt to keep bathrooms or cars smelling from smoking or pet odors) and I cannot tell any difference in efficacy between the two anyway.
I formerly hung a Bounce dryer sheet in the hose space (which works also) but I don't like the perfume from that and the Febreze works better.
By keeping the head and hose spaces clean and sprayed with Fabreze along with periodically flushing
out the bilge
area with fresh water
women can open enter the boat after it has been closed up all day and not smell anything offensive and they feel much more "welcome" down below. Naturally I have become finatic about having no diesel
, head, or other leaks
down below to add to the problem.