I see as much bad info going on with vaping cannabis as with vaping nicotineā¦PG is safe to inhale, itās been used for decades that wayā¦ in hospitals nonetheless, in childrens wards to keep risk of virus transmission down. The temperature they used in their vaping study in the OP was way higher than even the recommended highest temp for vaping cannabisā¦ at 446 degrees F, youāre entering into combustion territory, which is where almost all your carcinogens will come from. The Flash Point of propylene glycolā109 Ā°C (228.2 Ā°F). Dabbing can cause combustion chemicals output if youāre doing it wrong, as can any heat method if you do it wrong. Ideally with dabbing youāre essentially creating a high enough temperature to vaporize the dab as soon as it comes into contact with the surface. Are people likely to mess up and overheat now and then? absolutelyā¦ but that is not the norm and should not be taken as such in āScientificā literatureā¦ The amount of bad science relating to vaping is truly horrendous, with a lot of it being heating it to a point that no vaper ever would. Have I gotten burnt hits now and then, yeahā¦ and any vaper will tell you straight out that as soon as you taste the burnt hit, you do not keep vaping, you fix it, because the taste is absolutely horrendous. You donāt keep on vaping it till the juice is finished like they do in the studiesā¦