That may be because there was a significant quality control issue a few years ago where the solvent used in some liquid vape cartridges was causing serious lung

That may be because there was a significant quality control issue a few years ago where the solvent used in some liquid vape cartridges was causing serious lung problems. I don't remember the details, but I have heard dry vape lauded as a safer alternative, since there are no additives or solvents involved, meaning you only have to worry about pesticides and fertilizers.