Negative Ion Generators

Reviving this topic if I can... I am looking into getting a negative ion generator for my grow room and am wondering if anyone has experience with them. There are a lot out there claiming to do the same thing and I want to make sure I get a quality product. Also I would like to avoid any Ozone production but I have read that this greatly increases the effectiveness of eliminating odors. Any help (especially reviews of products) would be greatly appreciated.

No one has any insight into this topic at all? I know that the ionizers can rob your bud of taste and smell a bit if placed within the tent but how does it work for deodorizing rooms when placed outside the grow area?