What do air purifiers dont have that we need more?
I have a project and am thinking of making an air purifier for the 1900s. I want to make one that has something that present air purifiers dont have. Please answer and if you have another invention ideas, please tell me. No harsh comments. Im only in 8th grade.

One thing that is often overlooked by our foreign counterparts, as they continue to stack features onto their air cleaning devices, is the fact that many elements found in nature are difficult to balance by a simple device. What I mean is that features like producing negative ions sound good, but without the other elements that usually come with the ions in nature, they get out of balance and actually cause severe headaches for some people.
The best air purifier on the market is the Sun Pure SP-20C (same as the Continental Fan CX1000) at http://www.allergy-relief-air-purifier.com/portable-air-purifiers.html So take a look at how it is designed to see if it gives you some ideas. Good luck!!
:O hey no fair!!! cheater!!