Filters and ozone generators are not necesarily a same thing. Ozone, in relatively low concentrations, is an irritant, and in higher concentration is actually

Filters and ozone generators are not necesarily a same thing. Ozone, in relatively low concentrations, is an irritant, and in higher concentration is actually toxic, some related notes are on a recent thread here: https://news.ycombinator.com/item?id=25026567 https://news.ycombinator.com/item?id=25026567 I would say that it all depends on the amount/concentration of ozone, i.e. it is dependant on the generator and size of rooms/flow of air treated, etc..