>>11371200Shit. You need a full face mask with a rubber seal which conforms to your face well, and N100 filters. You also need to be totally clean shaven, and you need to sterilize yourself before removing the mask. Using a weak adhesive between your skin and the seal is advisable if practical. There are many studies showing how effective masks are against various pathogens under various conditions. You should be reading them instead of asking on fucking 4chan.
>>11371275Yes. Those cheap disposables are security theater though. They're good for keeping infected people from coughing into the open air and wiping their hand on their face, but that's about it.
>>11371289Don't spread disinformation.
>>11371330Yes they do.
