I do have info on the ionic type air purifiers.. there is a reason nobody uses them in hydroponics.. the negative ions destroy all taste and flavor in the fruit.. would bet it would do the same to bud.. the guy at the hydro shop told me that. Now I have an ionic air purifier in my bathroom

Good idea though.. and I like that charcoal idea.. I have a bunch of charcoal sitting around here and my roomate with the grill moved out.