Haber won the Nobel Prize for his work on nitrogen fixation, AND was the father of Poison Gas in WW1.
His first wife, Clara Immerwahr, was a Ph.D. chemist herself. She committed suicide, possibly because she opposed her husband's work with poison gases.
Haber was decorated by the Kaiser and awarded the honorary rank of captain. Nevertheless, Haber was forced to flee Germany in 1933 to escape the Nazi persecution of the Jews.