Re: Avoiding inhaling road dust how?

In article <9pn0t1l32cikc0s4cq14d811i6smmj5djk@xxxxxxx>,
Patrick Lamb <pdl678NOSPAM@xxxxxxxxxxx> wrote:

> On 19 Jan 2006 18:10:21 -0800, "Ted" <plpfoot@xxxxxxxxx> wrote:
>
> >Come on, do you really think that a piece of polyesther cloth is going
> >to filter out viruses? They are on the order of 50 nanometers. I
> >think the holes in the mesh are a little bigger than that.
>
> True, but viruses (and bacteria) are seldom airborne alone and still
> viable. They're on dust particles, droplets of water, etc. If you
> can filter out the dust, you're filtering out most of the germs (to
> use a non-technical term).

Yes. The first law of toxicology: the poison is in the
dose. A small fraction of a toxic dose is not that
fraction of being toxic. Mostly, a small dose of poison is
not harmful at all.

Heavy metals are an exception. They remain in the tissue,
are not metabolized, and remain toxic; wandering around,
denaturing proteins.

--
Michael Press
.

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