Aireox professional series model 22 works very well. I was so sick I had to wear mask with carbon. Got that and car is safety zone. Ionizers if you look them up are bad for lungs -so are ozone ones.they really are same. Cloth seats no good for me i am allergic to material pus they absorb dust and odors etc. If I am on any cloth sest I must cover it with barrier cloth.then wash cloth after each use