Categories Uncategorized Coronavirus; masks; FFP2 or FFP3; An upper bound on one-to-one exposure to infectious human respiratory particles Post author By Pete's Library Post date December 5, 2021 No Comments on Coronavirus; masks; FFP2 or FFP3; An upper bound on one-to-one exposure to infectious human respiratory particles twitter.com/dickzoutman/status/1467303435192184834 Share this:TwitterFacebookLike this:Like Loading... ← Coronavirus: hippos test positive → Coronavirus: how to protect oneself Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. ( Log Out / Change ) You are commenting using your Twitter account. ( Log Out / Change ) You are commenting using your Facebook account. ( Log Out / Change ) Cancel Connecting to %s Notify me of new comments via email. Notify me of new posts via email. Δ
Pete's Library 