You say “Bezthem!” and you hear a pop. But when you try the door out, it is still locked. Then you hear it before you smell it, somewhere high on the edge of the room a valve opened and the stench of pungent air comes into the room. At first you thought it as poison, but when you hear that slow ominous gurgly rumble, you realize some liquid is coming and you really know wicked this way comes. Two minutes later strong acid pours into the room. You die a horrible agonizing death. Your body is never found, it dissolves entirely.
You are dead. One of your answers in the last 3 was wrong. Too bad we won’t tell you which one.