lowcoast. Checked Rosenthal's book and it appears that the negative ions may neutralize odor molocules on the buds not protected by trichome membrane. The terpenes inside the membrane are unaffected. This info. is in regard to the buds in the last few weeks of flowering. By analogy we could relate it to the drying/curing process. He recommends that ionizers be placed outside the grow room during the last few weeks of flowering and not in direct contact with plants. I have seen your purifier model before--can you switch off the ionizer. Hope this gives you some info.