> It was all about masks/no masks, remember? You're clearly pushing an agenda. The problem is that these kind of filtration systems couldn't be rolled out en-m

> It was all about masks/no masks, remember? You're clearly pushing an agenda. The problem is that these kind of filtration systems couldn't be rolled out en-masse across the world. During COVID hospitals absolutely were using air filtration systems and places where it made sense (I remember COVID doctor's conferences had advanced filters for each room).