I was thinking of using a small BBQ as a test first. I've a spare household fire/carbon monoxide detector. I'm just interested on the safe minimum of ventilation that'd required before people start to fall asleep.
How about a frontier stove? We camped opposite a tentipi last week and it looked fab with the flue coming up through the top. Have to admit to feeling very envious.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets