[There are doors at each wall, but no exit. No matter how hard he pulls, pushes, fights, they will not open.
He may seek refuge on the raised platform at the end of the room, but even that will not stop the riding tides of the hot, putrid liquid. It bubbles and burps, the heat getting closer as hotter as more of it spreads--rising up.
Perhaps there is a secret exit behind the strange lab? Who knows.]