Im loving the fresh air smell in my home! In the photo, its sitting on my small pantry cabinet in the kitchen  its taking the cooking  baking odors away! The effect is long lasting as well. I also have multiple pets  am allergic to their hair  dander  since this ozone generator arrived, my sinuses  nose running have eased up! Yay! The user manual also states that if run on lowest setting, theres no need to leave the house. I havent needed to run it on any higher setting.