> Thing is I haven’t read where someone can say whether it’s contamination or whether it’s the high heat vaporization or the combo or something else which is ca

> Thing is I haven’t read where someone can say whether it’s contamination or whether it’s the high heat vaporization or the combo or something else which is causing this. You can start here, this WaPo article talks about the contaminant, Vitamin E Acetate aka alpha-Tocopherol acetate, an ester of Vitamin E and acetic acid. https://www.washingtonpost.com/health/2019/09/05/contaminant-found-vaping-products-linked-deadly-lung-illnesses-state-federal-labs-show/ https://www.washingtonpost.com/health/2019/09/05/contaminant... The PubChem article on this compound, first aid section recommends inhalation should be ceased ASAP. Also scroll down to the firefighting section, which recommends a respirator with an organic vapor/acid gas cartridge. This is because of the caustic nature of the compound when vaporized. https://pubchem.ncbi.nlm.nih.gov/compound/alpha-Tocopherol-acetate#section=First-Aid https://pubchem.ncbi.nlm.nih.gov/compound/alpha-Tocopherol-a... This article details finding from The Mayo Clinic that the lung tissue studies revealed chemical burns. https://www.msn.com/en-us/news/us/lung-damage-from-vaping-resembles-chemical-burns-report-says/ar-AAIez83 https://www.msn.com/en-us/news/us/lung-damage-from-vaping-re... Obviously not conclusive, but also not a completely bizarre supposition that inhaling a substance that breaks down into a mild acid when vaporized might cause chemical burns.