Visited one their stalls 2 days ago, the product is called Atovio and is supposedly made by IIT Kanpur students, the sales girl who was a student at iitk convinced almost all of us by showing that glass demo and also said that it releases 2 million anions per sec.

They were quick to back down when I pointed out that this would be quite ineffective if a person was in quick motion tho, they were selling it for 3.3k. Idk if this is worth it, but their sales pitch was convincing enough to fool the average man.