Zyklon B
Drug / Medication
A cyanide-based insecticide developed at Haber's post-WWI institute. Modified by the Nazis, it was later used as a poison gas in extermination camps during the Holocaust.
Mentioned in 2 videos
Videos Mentioning Zyklon B

Brian Keating: Cosmology, Astrophysics, Aliens & Losing the Nobel Prize | Lex Fridman Podcast #257
Lex Fridman
A chemical gas, a variant of which was invented by Fritz Haber, tragically later used in the Holocaust, leading to the deaths of some of his relatives.

The Man Who Killed Millions and Saved Billions (Clean Version)
Veritasium
A cyanide-based insecticide developed at Haber's post-WWI institute. Modified by the Nazis, it was later used as a poison gas in extermination camps during the Holocaust.