Air Purifiers Do Work...Even Against Smelly Hockey Equipment

I currently have an Air Purifier and I have had it for a few years now. I'm not sure how effective it still is. I bought it off Ebay about three years ago for only $50. The brand name of the air purifier is "NeoTec". After I would play ice hockey I would pull out all my equipment and let it dry out in a room. The smell of the hockey equipment was horrible. I put the air purifier in the same room as the ice hockey equipment and it almost completely killed the smell. I have read that the air purifier should be placed in a high point in the room so the charged anions can spread around the room from the top down. I placed the air purifier close to the ceiling on a shelf in the room with the ice hockey equipment.