Most cloth masks with a tight weave fabric are equal to N50. I will find the article and are useful for reducing the distance that virus floats. 
From 27 meters to 1 meter.     So they do work both ways.  Yes you need
to wash them daily.  Masks work even if not as complete as N95 they are so many miles better than nothing.   The cloth masks have been modeled extensively to get the results that we should wear them.   Discount it all you want. The science says wear them.   I find it amazing that there is disagreement on that in this group.

On 6/26/20 1:25 PM, David Coudron wrote:

Sometimes I wonder if low tech masks are efficient germ spreaders.   Basically the infected person breathes into/coughs into/sneezes into mask which holds droplets infected with virus.   Since the mask doesn’t filter virus sized particles, the mask wearer breathing out is like putting a small fan behind an infected surface, spewing micro droplets into the air.  If no mask, larger droplets fall faster rather than float in the air.    Similar to what Steve is saying, but for non-N95 masks.  If air is getting in, air is also getting out through the mask pushing virus out.   Seems like the fancy air diffuser the boss has to make the house smell good, but for virus.   No science behind this at all, just musing 😊

Regards,

David Coudron

*From:* AF <af-boun...@af.afmug.com> *On Behalf Of * Steve Jones
*Sent:* Friday, June 26, 2020 2:05 PM
*To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
*Subject:* Re: [AFMUG] OT Unifying dislike

the irony of the N95 masks with ports is they have the unfiltered low impedance exhaust port, actually "spreads" the disease more since the air velocity is increased.

Just call your meeting a protest anyway, then you dont need to wear a mask since this doesnt spread at protests

On Fri, Jun 26, 2020 at 1:26 PM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com>> wrote:

    Chuck, are these business meetings with your own employees, or
    outside people?  Can you hold the meetings outside and stay 6 feet
    from each other?  Although being outside probably increases the
    probability of shouting and, if you have allergies, sneezing.

    Imagine being a nurse/doctor/dentist/etc and wearing one of the
    tight-fitting N95 masks (plus probably goggles) for a 12 hour
    shift, day after day.  The ones that leave marks on your face.

    *From:* AF <af-boun...@af.afmug.com
    <mailto:af-boun...@af.afmug.com>> *On Behalf Of *ch...@wbmfg.com
    <mailto:ch...@wbmfg.com>
    *Sent:* Friday, June 26, 2020 1:17 PM
    *To:* AnimalFarm Microwave Users Group <af@af.afmug.com
    <mailto:af@af.afmug.com>>
    *Subject:* Re: [AFMUG] OT Unifying dislike

    Indian love song.  Splat.  That was one of the all time funniest
    scenes in a movie ever.

    *From:*Bill Prince

    *Sent:*Friday, June 26, 2020 11:45 AM

    *To:*af@af.afmug.com <mailto:af@af.afmug.com>

    *Subject:*Re: [AFMUG] OT Unifying dislike

    That and "It's a Small World". Gawd, I want to run into a hot lava
    pit when I hear that.

    bp

    <part15sbs{at}gmail{dot}com>

    On 6/26/2020 10:26 AM, Ken Hohhof wrote:

        I’ve occasionally seen people wearing clear face shields.  Not
        sure if those are effective and/or allowed instead of masks. 
        Kind of like a personal sneeze guard.  Now I’m having a mental
        picture of the aliens in Mars Attacks with their heads
        exploding inside their space helmets.  Whenever I hear the
        Kars for Kids song I feel like my head is going to explode.

        *From:*AF mailto:af-boun...@af.afmug.com *On Behalf Of *David
        Coudron
        *Sent:* Friday, June 26, 2020 12:10 PM
        *To:* AnimalFarm Microwave Users Group mailto:af@af.afmug.com
        <mailto:af@af.afmug.com>
        *Subject:* Re: [AFMUG] OT Unifying dislike

        You can officially count me among the haters of wearing
        masks.   Did it way too much as a kid on the farm when working
        in dusty environments or with insulation or other items you
        didn’t want to breathe in.   The novelty of wearing a mask
        wore off long ago……

        Regards,

        David Coudron

        *From:*AF <af-boun...@af.afmug.com
        <mailto:af-boun...@af.afmug.com>> *On Behalf Of
        *ch...@wbmfg.com <mailto:ch...@wbmfg.com>
        *Sent:* Friday, June 26, 2020 11:59 AM
        *To:* af@af.afmug.com <mailto:af@af.afmug.com>
        *Subject:* [AFMUG] OT Unifying dislike

        With almost every thought or opinion there will be someone
        with the opposite preference or opinion.

        However, one particular feeling might be universally held
        amongst humans.

        I am finding I really hate wearing masks during business
        meetings.

        I will do it until the virus is no longer a factor, but I do
        not like masks.

        I do not like to wear a mask over my mouth and nose.

        I am sure someone somewhere would say they do, but that would
        be an odd person.

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