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.
Countries with low manufacturing standards; historically one would assume China but that’s not necessarily the case nowadays
Why is a byproduct of ‘regulations’ that don’t allow them to be manufactured in a place with reasonable safety standards. Its not too different than when the US poisoned the alcohol supply and killed or maimed a bunch of people. All they reported at the time was that alcohol/moonshine is dangerous but it was only because the government made it that way by design not something inherent to the product itself.