No. I said you don't understand the basic science.
And you continue to attempt to insert your "facts."
I'll ask you again...how does a lighter than air gas go "down" into the piping and travel to other buildings?
There is zero indication that the room in question (a room admitted by its curator to be a prop for tourists) was ever gas-sealed in any manner whatsoever, and every indication that it was not.
Oddly, however, the chambers in the same complex used to actually fumigate clothing with Zyklon B (chambers no one contends were ever used to kill people), were indeed sealed in a highly technologically advanced way, with very sophisticated doors and frames, chambers possessing built in methods for removing the gas afterwards so that workers could safely enter to retrieve the clothing.
