Portable Gas Cooker

[LawAbidingCitizen]

I'm sure most of us have seen these and likely own one or more ourselves.

http://m.youtube.com/watch?v=OI0DcqUDFhg

I know there are warnings about using these indoors because of the Carbon Monoxide produced (which this lady doesn't even mention). I've actually used mine a few times indoors during power cuts with the kitchen window fully open and not closed again until an hour after use.

What are your opinions on the use of these indoors if well ventilated? Google results are incredibly mixed ranging from no problem at all to will cause certain death.