Scientist Proved Most to Least Effective Face Mask || BackVirus

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Published on August 11, 2020 6:30:04 PM ● Video Link: https://www.youtube.com/watch?v=Y90d4JUTZf4

Duration: 1:33

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#scientistprovedmosttoleasteffectivefacemask #backvirusgamer

hello friends,

NOTE: This mask is proved by scientist.In this video mask shown as Most to Least Effective Face Mask

1. N95 mask, no exhalation valve, fitted
2. Surgical mask
3. Cotton-polypropylene-cotton mask
4. Two-layer polypropylene apron mask
5. Two-layer cotton, pleated style mask
6. Two-layer cotton, pleated style mask
7. N95 mask with exhalation valve
8. Two-layer cotton, Olston style mask
9. One-layer Maxima AT mask
10. One-layer cotton, pleated style mask
11. Two-layer cotton, pleated style mask
12. Knitted mask
13. Bandana
14. Gaiter type neck fleece

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