"The ToxFREE for Life group bought 81 different headphones for the research, both the in ear and over the ear kind, in a number of countries in central Europe, as well as online via online platforms such as Shein and Temu. They tested them in a laboratory for a range of dangerous substances, and, alarmingly, found harmful chemicals in every single one."
... I suddenly see a new market for 1970s used stereo headphones coming back.
I suppose we shouldn't be surprised. Everywhere you look, something new is trying to kill you.