[...] two researchers at the Johns Hopkins Bloomberg School of Public Health are denying that smoking is known to be any more hazardous than vaping. [...] This type of denialism is something you might expect from the tobacco industry, not from public health researchers. But ironically, even the tobacco industry hasn't sunk to the level of claiming that their combustible cigarettes, [...] may be no more hazardous than devices which contain no tobacco and involve no combustion.