There were a whole bunch of them maybe 10 years ago. Usually advertised as "ionic air purifiers" or something similar. I found quite a few links / articles fr

There were a whole bunch of them maybe 10 years ago. Usually advertised as "ionic air purifiers" or something similar. I found quite a few links / articles from "fanless air purifiers": https://www.google.com/search?q=fanless+air+purifier https://www.google.com/search?q=fanless+air+purifier The market dried up because they were borderline bullshit, and produced ozone, sometimes far in excess of their claims. They did make air move quietly tho.