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When I raised facial hair as an issue I was laughed at. I knew it was a problem because I had a full beard and could feel my breath escape. I guess now there should be shave mandates since double shot with a booster and a beard means distributing death.
If you have a large beard, you’re basically unmasked. I think the CDC is right. If you’re bearded, it’s just hygiene theater. I’m not sure what can be done, mandating shaving would run against Jewish and Islamic beliefs, so any such mandate would probably be struck down quickly.
You can trim the beards down to get good fit. They can be as long as 10mm and not have any material impact on the fit of the mask, so long as you use the right mask-fitting process. They may be harder to fit on someone with a 10mm beard, but it’s still do-able. Same with CPAP and SCUBA masks.
Yea its so sad that many old beliefs will render the efforts like masks useless (to some extent but I still think it is beneficial over no masks.). :(
Let’s not be degrading by calling things old beliefs. There are plenty of hipster millennials growing immaculate beards and video blogging about it which are just as problematic with what the CDC said and would be upset
Then you need a full face respirator. Standard item, but rather pricey.
If you have facial hair, you can't expect a good seal around the edges of the mask, so there will be some air getting to you (and out of you) that is unfiltered.
This is also why military are told to have clean shave in world war II. Masks were important due to poisonous gas issues and facial hair creates a lot of problems.

So I don't this it is incredulous thing :)