![](https://v2.anonup.com/upload/avatars/2021/01/Fm8bWYEYHIvXSTcoI4PQ_25_3cca75762d4f924f20606dc445645a7e_thumbnail_512x512.jpeg)
Not to burst your bubble, but zyklon-b was a delousing agent....
https://www.thenation.com/article/archive/zyklon-b-us-border/
Zyklon B on the US Border | The Nation
A grim history lesson of what happened in the 1920s when fears of alien infection inflamed American eugenicists.
https://www.thenation.com/article/archive/zyklon-b-us-border/