Every time you ask a holocaust believer for a nazi gaz chamber picture, he shows you a shower or just a chamber. Then he tells you to "imagine" it had the equipment of a real gaz chamber.
That is not proof of the existence of nazi gaz chambers.
Historians fail at chemistry.
For a gazing to happen, a chamber has to have specific equipment, like the one in Baltimore.
The Allied bombings of supply lines killed the jews, hence the emaciated corpses.
Then the Allied decided to make up the Holohoax story to blame Nazi Germany instead.