This is an interesting topic.
I personally have had Co poisoning on a stinky disel boat at sea, sailing into the wind while I was on the rear deck & I can tell you I puked my guts out with pure yellow bile for 4- 6 hours straight, it was much, much, much worse then the worst drunk most have ever been on. Ive been on lots of boats - and this was not sea sickness. To this day I can smell a disel truck 1/4 mile in front of me on the highway with my windows down.
Not to make light of folks walking up gasping for air as it has happened to me also, but I can 10,000% guarantee you that you were most likely not suffering from severe Co poisoning or were near death. Now there is a case of a Mexican trucker with 100 illegal aliens in a boiling hot cargo truck with many dead inside, however that would be like comparing apples to oranges - as you do not have 130 deg heat in your teardrop at night.
The second point I would like to make is that old houses have up to 8 air changes per hour. The tightest houses that have been professional sealed with blower door tests and smoke leak tests can possible achieve .2 air changes per hour. It would boggle my mind if any teardrop has less then 1 air change per hour.
Has anyone ever done a blower door & smoke test to then determine how air tight their teardrop actually is ?? To gather some basic scientific evidence ?I think it would be safe to say that sleeping with the windows cracked or open vent, allows for better healthy sleep !!
Everybody I'm sure can agree on that.
But coming to the conclusion that a tight teardrop can kill you , without even one recorded death or any scientific evidence
To support how air tight a teardrop actually is , is a little stretch of the imagination IMHO !!!
If someone strongly disagrees - them we need to get the myth busters on board
Jerry