I got the Instant brand charcoal air purifier mainly for carpet odors and to decrease the VOC’s.   I have been using it in my living room to help with the smell of my mothers carpet.   She refuses to get rid of it and I can smell urine from a dog she had years ago.  I also got it to help with the new carpet & furniture I just purchased for my daughters room.  I was concerned about the VOC’s 

being released into the air.  After 3 weeks of just leaving it on auto the living room already smells better.  It also really quiet & when you turn off the light you can barely tell it’s on.   Great purchase!