What you seem to be missing is the fact that air purifiers are a lot larger than a laptop. I have one sitting next to me on the floor that's 32x32x56cm. It's th

What you seem to be missing is the fact that air purifiers are a lot larger than a laptop. I have one sitting next to me on the floor that's 32x32x56cm. It's the size of a medium-large rubbish bin, and it needs 30cm clearance around it. This is one meant for a small room, and you're supposed to keep the room closed to improve efficiency, otherwise the air exchange with the rest of the house or the outside more or less defeats its purpose. What I find really lacking is an efficient way to deal with VOCs. These air filters seem to be really good at clearing out particles and microparticles from the air but even with a good deal with activated carbon they don't seem to do much for VOCs, which I suspect is the main issue indoors.