On the 16 April 1947, Rudolf Franz Ferdinand Höss was hanged from specially constructed gallows.
Wikipedia blatantly posts lies about this man’s activities while he was Commandant at Auschwitz: Höss introduced pesticide Zyklon B containing hydrogen cyanide to the killing process, thereby allowing soldiers at Auschwitz to murder 2,000 people every hour. – Wikipedia Rudolf Höss
Such nonsense claims have never been tested empirically because the topic is legally protected from a rigorous questioning of the forensic/physical facts alleged.
Dr Fredrick Töben in 1997 and 1999 at Auschwitz-Stammlager and Auschwitz-Birkenau looking for, among other things, the alleged homicidal gas chambers’ gas induction holes.