I have this air purifier for about two weeks now, and am very happy with it. It definitely helped eliminate the toxic fumes and smell after a painting g job in my house, and it's helping with my son's cough. The reason for taking off one star is because the controls lock is very easy to unlock by my toddler. This ends up being annoying as he then changes the setting or turns off the device. And my son cannot undo control locks on any other device in my home...
But I do greatly appreciate the fresher air in my home!