The Canary Girls were British women who worked in munitions manufacturing trinitrotoluene (TNT) shells during the First World War (1914–1918). The nickname arose because exposure to TNT is toxic, and repeated exposure can turn the skin an orange-yellow color reminiscent of the plumage of a canary.

https://www.bbc.com/news/uk-england-39434504

https://open.spotify.com/episode/33hM3g2bMG0pzIdHyiEvzi?si=418e7dcf4fae4f58

https://en.wikipedia.org/wiki/List_of_munition_workers_who_d ...