Sales of cannabis vaping products in the US fell 40 % in the first week of September after 13 people died and 20 people became ill with severe respiratory illnesses linked to the products . The CDC has urged people not to vape at all – and to avoid THC in particular – until more is known. Around 80 % of deaths have occurred in people who vaped both nicotine and ethanol ( THC ) . The mixing of many ingredients with primary compounds could have produced new toxic agents , according to a New England Journal of Medicine editorial . The US Centers for Disease Control and Prevention has advised people not to smoke , especially THC , until the illnesses have been investigated .
Sales of cannabis vaping products in the US fell 40 % in the first week of September after 13 people died and 20 people became ill with severe respiratory illnesses linked to the products . Around 80 % of deaths have occurred in people who vaped both nicotine and ethanol ( THC ) . The mixing of many ingredients with primary compounds could have produced new toxic agents , according to a New England Journal of Medicine editorial . The US Centers for Disease Control and Prevention has advised people not to smoke , especially THC , until the illnesses have been investigated .