your traps should be stopping all smells from coming back up ...knowing crossroads quality record , they probably forgot to put a trap somewhere ...maybe the shower?thats hidden.
check all your traps and also check the "vent" under your sink ...it may be faulty.
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper