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Haunted Halloween masks from a mysterious costume shop that turn you evil and grow into your skin score a surprisingly high 80% filtration efficiency in R. L. Stine-sponsored NIOSH tests.

"Masks", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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Haunted Halloween masks from a mysterious costume shop that turn you evil and grow into your skin score a surprisingly high 80% filtration efficiency in R. L. Stine-sponsored NIOSH tests.


Page last modified: 10/2/2020.