There is some evidence that high airborne particle counts disrupts sleep, and so an air purifier could be helpful. However, air purifiers also make noise which can disturb sleep. There are so far no definitive trials to prove that air purifiers help sleep but it may be worth buying one of the particularly quiet once outlined in this article "There is some evidence that high airborne particle counts disrupts sleep, and so an air purifier could be helpful. However, air purifiers also make noise which can disturb sleep. There are so far no definitive trials to prove that air purifiers help sleep but it may be worth buying one of the particularly quiet once outlined in this article "Best Air Purifier for a Bedroom". If the humidity is very high then a dehumidifier may help you to sleep. If the humidity is very high then a dehumidifier may help you to sleep