PSA: IARC haven’t found a single thing thats is definitely not carcinogenic and lists shit like radio waves or tumble driers as possibly carcinogenic.
Caprolactam used to be the the only chemical IARC had ever classified in their group 4 "probably not carcinogenic to humans" [1] but in 2019 they moved it to group 3 [2].
[1] https://publications.iarc.fr/_publications/media/download/22...
[2] https://monographs.iarc.fr/list-of-classifications/