Colin Espie, professor of sleep medicine at Oxford University claims a smelly room could interfere with a teenager’s ability to sleep properly.: “The smelly teenager’s bedroom is a byproduct of the fact that the room is full of rebreathed air, which is low in oxygen and high in nitrogen. If you keep on rebreathing the same air in a small bedroom that is hot and not ventilated you will wake up with a headache after a poor night’s sleep.”
http://www.thesundaytimes.co.uk/sto/news/uk_news/article1660124.ece?CMP=OTH-gnws-standard-2016_01_23
