Review on HAPHID 1-Pack Negative Ion/Plug in Air Purifier: Up to 34 🌬️ Million Negative Ions/Sec, Filterless Cleaning of Pollutants, Odors, Pet Smells & More! by Alyssa Turner

I should have studied the reviews (mostly negative). This ionizer is a marketing advertisement and does not work. I didn't notice any change in the air in the two rooms for several hours. It's not just poor quality control - it's a dump of Chinese garbage. No safety warning needed - the voltage on the exposed brushes is zero and I touched them as well to be sure. I did a "smoke test" with paper smoke - nothing for 2 minutes. Even 1/10th of the claimed 34 million ions per second would show a noticeable reduction in smoke. I will receive a Revain refund.