I have been using this non stop in my bedroom. I suffer from allergies and also live in Las Vegas which people develop bad allergies never before having any. Mine will send me to the hospital unable to breathe at times. I am constantly dusting, cleaning and keeping my air as clean as possible. I used this for a couple of weeks and documented any changes and I have noticed so many changes and I will say positive. My eyes have reduced the puffiness and watery affect and I am feeling different even on the lowest setting. It is a little loud on the highest setting which may bother some but doesn’t bother me. This is also i would say good quality and will last some time. It doesn’t have a scent but to be honest, i did not check if they came with scent filters due to me not liking stuff with scents or fragrances. I would definitely recommend. It is small enough for you to place in a corner anywhere in an office or room.