My husband has severe allergies, I smoke, and we have dogs in our home. My husband was getting three serum shots per week for his allergies, but even so, symptoms remained, so I told him about the Fresh Air purifier when I heard about it. He is extremely skeptical about products that sound “too good to be true”, but said he’ll give it a try for 30 days. I bought it and as each day went by, he was more and more impressed. He was feeling much better and our home smelled so clean that visitors wanted to know how we had done that. We bought the unit 2 months ago, and it’s one of the smartest purchases we ever made. We love it! Walking into our home to that wonderful clean smell is great, but best of all, my husband has quit taking allergy shots and feels so much better. He says he can’t live without his Living Lightning Air purifier.