The idea of precipitating airborne particles with a charge is not new. There were a number of vendors selling "negative ion generators" in the late seventies/early eightees. The technique has merit and is basically a form of scrubbing.
Actually, the charge goes to electronegative oxygen,
and generates superoxide anion, and may thereafter,
also form hydrogen peroxide and finally some hydroxyl radical.
These have direct antibacterial and antiviral properties beyond colligation as you suggest.