Do any of you use ona gel for odor control? I have a fan with filter but want something to neutralize the smell from when you have the tent open to water plants and do lst and then when you harvest the plants. I have read that many people recommend you do not keep it near the plants as you do not want the buds to absorb the smell from the ona gel. How far away do you keep yours? Do you like the ona gel? Do you recommend it on there?