 left that clean and fresh scent, gets rid of the odors, the mold, the viruses in the air, and it does it in a very, very efficient way, out of the way, small profile. You plug it in to the outlet. It doesn't take up a bunch of space in your living room or your bedroom or wherever it has to be. You also don't replace filters all the time. That's going to save you a bunch of money. It uses Oxy technology, sending out O3 molecules that seek out and destroy those odors, getting rid of them. Don't use sprays and candles to cover it up. Get rid of the odors right now.