Possibly, this Wikipedia page says that WW2 buttons were made from Bakelite, its a bit confusing because at one point it was a brand name but after some patents had expired it seemed to become a general term for a type of plastic.
Considering it could contain Formaldehyde and Asbestos its perhaps odd how keen people are to have it around the house.
Rob
https://en.wikipedia.org/wiki/Bakelite