Basic question, does your sense of smell still work while sleeping? Had an interesting conversation this past weekend while camping with family. A couple of them said that your smell does not work and that is why some have died during house fires while asleep. Also they claim that you cannot smell any smell after a short while if you are not thinking about it. If that is the case then why do smelling salts work? Why do some food smells wake me up? Maybe some people are different, maybe some scents alert you while others do not or maybe your sense of smell is just working at a minimum? I know stupid question, but when I look it up I get mixed answers. And my family is rather bull headed so I want to know!