“existence of a vast, unregulated, shadowy marketplace of illicit or bootleg vaping products that are essentially a stew of unknown chemicals concocted, packed and sold by unknown manufacturers and sellers”

Link. “Vitamin E acetate is sticky, like honey, and clings to lung tissue, the C.D.C. said. Researchers do not know exactly how it harms the lungs, but studies in animals are being considered to help explain that”