It's freezing where I live now and even in the summer it's usually too windy and not suitable to sleep outside. What negative reports have you heard?
So basically, you have to plus this thing in? I'm not sure if I get exactly HOW this works so I'll go back to the website and try and read through it.
Anonalon: Allergies/intolerances can cause a lot of the same symptoms as AF. Indoor "pollution" is often worse/more toxic than outdoor. One thing I thought of when reading your posts is that you could be sensitive to stuff that is inside your house (just a thought.)