Actually.
(media.scored.co)
Zyklon b was used as a delousing agent to sanitize prisoners of pests like fleas which are known to carry typhus and transfer it to humans via bites. That’s also why they had shaved heads. The main cause of death in the camps was from starvation due to the allies bombing German supply lines. This is why you see all those (mainly post-war photoshopped) pictures of skinny prisoners. Notice how I didn’t say jews. This was intentional because a lot of the “photo documentation” of the holohoax is actually from the Holodomor and of non-jew prisoners during WW2.