Time To Ditch the Cloth Mask and Get a Couple KF94 Masks Aerosol engineer (and bike nerd) Aaron Collins, has been doing mask research and sharing his findings on YouTube. Here’s my incredible dumbed-down synopsis. Read Time To Ditch the Cloth Mask and Get a Couple KF94 Masks 2020 in 13 Seconds Right after we moved into our new house, I took a photo with my iPhone every morning at 8 am. So, 300+ ph
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