RoyB wrote:
... Never could find the so-called drip pan inside the trailer. My setup has a plugged hose that extends out the back of the outside fridge vent but I could never tell where it came from without moving the fridge out. I understand now that hose is actually more of an inside vent then discharge of fluids.
My trailer has a black hose sticking out of a vent like this on the outside of the trailer that has something to do with the fridge...

Roy Ken
Roy......inside fridge section just under the cooling fins should be a condensation pan that has a drain hole on it that goes thru back wall of fridge. That tube connects to that pan so condensation from fins can flow to outside of rig.
In the end of that tube is a 'bug plug' so critters can not crawl up tube to inside of fridge.
OP...stinky smell
Wipe everything down with a cloth soaked in vinegar
then wipe everything down with a damp rag using clean water
then use coffee grounds, wadded up newspapers definitely work they just take time.
Have not found any thing that quickly removes the stink