"Your" door seems to be locked, and nobody responds to knocking. You're not sure who would be home, but it made sense to check because nothing else ever does around here.
Your red key seems to match the keyhole next to the big switch. You're not sure if you want to try it yet.
You direct a few hello's at the stream of worms. A big purple one momentarily raises its head in your direction, only to roll its eyes and return to its whatever it was doing. You get no further reactions.
You poke the jelly with your stick. It's firm and rubbery, like gelatin dessert. It smells like vinegar.
The incinerator door opens into a long, dark chute.
The overall smell of the room is musty, sour and acidic. It is definitely the smell you expected of dead bodies in various states of preservation.