The line from my toilet runs under the bed, through the rear wall
(transom?) of the interior and into a tank in the engine compartment.
Recently I've removed the walls from around the bottom of the bed,
and now the stink from the hose is much more noticable. It's a white
plastic hose and you can see that there is wire reinforcement within.
Is there something I can wrap the hose in, or any other methods to
reduce the amount of smell that gets out through the hose?

Thanks,
David