“Mask study published by NIH suggests N95 Covid masks may expose wearers to dangerous level of toxic compounds linked to seizures and cancer”
But a study quietly re-shared by the National Institutes of Health in spring suggests the tight-fitting mask may expose users to dangerous levels of toxic chemicals. [...] The study found that the chemicals released by these masks had eight times the recommended safety limit of toxic volatile organic compounds (TVOCs). [...] The study was published in the journal Ecotoxicology and Environmental Safety and on the NIH's website.