Vitamin E acetate is a substance present in topical consumer products or dietary supplements, but data are limited about its effects after inhalation. “While the FDA does not have enough data presently to conclude that Vitamin E acetate is the cause of the lung injury in these cases, the agency believes it is prudent to avoid inhaling this substance.”
https://vaping360.com/vape-news/84181/vitamin-e-acetate-products-investigated-in-thc-oil-deaths/