The reason that Rudolf Hoess chose to use Zyklon B instead of carbon monoxide in the newly constructed gas chambers of Auschwitz is It was possible to disseminate Zyklon B in a huge room, which enabled the execution of a greater number of inmates at a faster time interval.

This is further explained below.

<h3>What is Rudolf Hoess?</h3>

Generally, Rudolf Hess was Adolf Hitler's longtime personal assistant and served as the deputy party chairman of the Nazi Party up to 1941. He was born in 1894 and passed away in 1987. In May of 1941, Hess boarded a plane and traveled to Scotland in the hopes of brokering a peace agreement between Germany and Britain. He was taken into custody without delay and sent to jail.

In conclusion, During the year 1944, when significant numbers of transports were arriving at crematorium V, the individuals who had been designated to die in the gas chamber also disrobed in the open air. After the Sonderkommando had been housed in the area designated as the undressing room in crematorium IV, the individuals who had been assigned to die there undressed in a barracks that had been specifically built for them.

The members of the SS prevented the individuals who were doomed to die from being informed of what was in store for them. They were informed that they will soon be transferred to the camp, but before that, they were required to get disinfection and take a shower. The victims were forced to strip before being escorted into the gas chamber, where they were then sealed in and put to death with Zyklon B gas.

After breathing 70 mg of hydrogen cyanide or Zyklon B, a human person weighing 68 kilograms (150 lb) has less than two minutes to live before succumbing to their poison. while lethal levels of carbon monoxide may take effect in just five minutes. When present in low quantities, it takes a greater amount of time for the substance to have an effect on the body.

It was possible to disseminate Zyklon B in a huge room, which enabled the execution of a greater number of inmates at a faster time interval.