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.
I’d be pretty surprised to see lead solder used in these applications, lead free is the defacto standard and has been for a long time. Not in vapes but any consumer electronics device.
More than likely it’s the mesh coils used having some lead present.