We have 2 of these now and we love them! We have a swamp cooler and we have to keep it running 24/7 so we don’t melt in our house but it has a slight smell that lingers even when we turn it off. After having these, the smell is gone! We put one in our 4-week old baby’s room and she slept so much better. It’s also a convenient white noise machine too. Lol.