Vitamin E acetate, in combination with THC, may be to blame for a national outbreak of e-cigarette-related lung injuries that's linked to dozens of deaths, according to US Centers for Disease Control and Prevention officials. So far, there have been 2,051 cases of vaping associated illnesses, reported in every state, except for Alaska, as of November 5. States have reported at least 40 deaths.

https://www.cnn.com/2019/11/08/health/vaping-injury-vitamin-e-thc-bn/index.html