Today's room pays off the sinkhole from Jan. 5's room. The ground collapsed months (maybe years) ago, blocking some halls. The residents dump trash here now. Folks can climb the trash up to the surface, but might take up a terrible stench - roll a saving throw or gain Charisma, then Constitution, exhaustion. While exhausted, any ability checks using those stats are rolled at disadvantage.
I went ahead and started sketching out a more robust floorplan, using the room diagram I made yesterday as guidance. It's helpful, but I am struggling to make it work tonight. I'll take an additional crack at it tomorrow.
