[montag813]

Virus' are very small, if it is carried in the air without rapidly dying then that't big trouble. No typical medical mask is going to protect you from something so small.

Can't the companies whose products can detect the airborne presence of Anthrax use them to detect viruses? This could at least warn of SARS-infected persons before they are treated, if deployed in hospitals.

[DB]

I don't know but I would seriously doubt it. Anthrax for example is very large compared to a virus. You also have to remember there are lots of things floating around in the air that harmless. You're basically looking for a needle in a haystack.