raggie33 said:
ive heard mask wont work .cause the germs is to small and in the air but i may a missunderstood them
Whether a regular "surgical mask" is adequate is certainly up for debate, as filtering out incoming air isn't really the intention anyway; surgical masks are designed to keep the spit, cough droplets, bacteria, etc. from the doctor
away from the patient.
However, NIOSH respirators (N95/P95/P100) should do the trick, and are pretty much what is called for by any disease control standards. It's a common misunderstanding that "particles" can be too small for these kinds of filters, because it's based on a layperson's basic understanding of how a filter works--that a filter is a screen and can only catch particles that are larger than the weave or pores that allow air through.
In actuality, .3 micrometers is the hardest size particle to filter--anything larger than that size and anything smaller than that size are in fact
easier to filter. This is because smaller particles will actually stick to the fibers of the mask easier because of vander waals forces--the smaller particles are to light to overcome inherent atomic attractive forces.
Oh yeah, and I would advise against the nanomask, the website seems full of pseudoscience...