They may look like travel shampoo bottles and smell like bubblegum, but after a few hundred puffs, some disposable, electronic cigarettes and vape pods release higher amounts of toxic metals than older e-cigarettes and traditional cigarettes, according to a study from the University of California, Davis. For example, one of the disposable e-cigarettes studied released more lead during a day’s use than nearly 20 packs of traditional cigarettes.
It’s not from the coil, at least in the cases that this article is about, but other parts of the tank. Shitty manufacturing, anyways
Or just another shitty study like the one they did in Oregon where they fired the coils for 60 seconds at a time and literally melted the rigs down before measuring what chemicals off gassed from the smoldering pile of plastic and metal.