Most odor particles are solids which are electricaly charge beacouse they are missing an electron. When the ions, loaded with an extra electron,and electron deprived particles meet, the electron migrates to the particle. The particle is neutralized,it loses its odor and precipitates out of the air.
: ion generator (inexpensive),air purifuer , carbon filter, HEPA FILTERS that eliminate bacteria and fungal spores as well kill some odors that are airborne.
PERSONALY: AIR PURIFUER couse some of them come with built in ion generator AND CARBON FILTER AND OUTSIDE CANT SMELL NOTHING
and you see the diference big time almost no smell