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This is pure genius and needs to be widely diffused. With three rubber bands, the performance of a regular surgical mask is greatly enhanced. This does match a scientific study I read, that a surgical mask with a good seal filters to a level almost equal to an N95 mask (the latter still beats it by a couple of percentage points but this is by far the second best one can do, in the absence of an N95.
More complete instructions and another alternative with a rubber sheet, here:
Last edited by GreatNewsTonight; 05/18/2011:29 PM.
Please take COVID-19 seriously; don't panic but don't deny it; practice social distancing (stay 6ft from people); wash your hands a lot, don't touch your face, don't gather with too many people, so that you help us contain it.
