Fritz Haber is the man responsible for these men having to wear masks. A brilliant scientist who saved countless lives by discovering how to synthesize ammonia which is used in fertilizers and has prevented millions of people from starving. He was also a patriotic German who developed the chlorine gases in WWI and is known as the father of chemical warfare.
It’s a fascinating story that I hope people will take time to learn about… his wife, after witnessing the atrocities that his gases caused, shot herself in the heart with a revolver. One of his sons also later committed suicide. A patriotic German who was also a Jew, he helped develop Zyklon A, not realizing it would someday be used to massacre millions of Jews.