Scientists have discovered a new method for detecting deadly pathogens like Anthrax or smallpox almost immediately after they've been released into the air.

Researchers at Lawrence Livermore National Laboratory said this week that they've developed a so-called nanowire bar-code system that could one day be used to create portable, quick-acting sensors designed to identify hundreds of airborne pathogens within minutes.

I think our air conditionar's dont do that ?