Hoping someone can help me out here. The last day or so after travelling there was an undeniable stench coming from the washer drain that's located in the garage of our '19 351M. It's a black pipe in the wall box (hot/cold/dump) that the drain tube goes into from the washer. On the box wall a sticker says "waterless trap" might get damaged yada yada. I believe something went wrong with the waterless p-trap but not sure how to check or where to access it? I'm guessing it's under the rig, and I'd have to take off the black covers underneath to get to it all. For now i put a wrong sized cap on it with some plumbers putty i had lying around as to not have someone pass out from the smell's coming up from it. Definitely not doing any laundry.
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any insight would be great!
thanks!