No, haven't tried the snake thing yet but will try that next.
There are two sinks, a jet tub and a toilet in a separate alcove... I have not actually gotten down on hands and knees and smelled the drain but I will say that the shower has glass door and when one opens the door to the shower, that is where the strongest smell comes from. Would an animal smell like sewage?? It definitely smells like waste and not dead animal...