I had my first trip out this year a couple of weeks ago in North Yorkshire, the first few days were very wet and windy. When cooking we usually have the door open and with the porch awning up it creates good ventilation. However we didn't use the awning on this occasion and I didn't open the poptop vents and there was no windows cracked open as it was blowing hard and raining outside
I was making a risotto which meant I was over the cooker for over 45 minutes stirring and adding ingredients when I could hear a peeping noise. Normally it is my fire alarm telling me my food is cooked thoroughly and ready to eat but this was my carbon monoxide detector which is on a shelf near my head . I opened the door briefly and then dropped open poptop vent and within a very short time the alarm stopped and I carried on cooking with no issues.

I always check my smoke and carbon monoxide alarms on every trip and change batteries when required, then I forget about them and enjoy the holiday, but am I glad I have them. Carbon monoxide is undetectable and a silent killer, in small doses it will make you feel ill as it builds up in your system

The moral is to cook with ventilation, make sure you have smoke and carbon monoxide alarms and check them on every trip.

This is some info from the web:

When burning LPG or natural gas under ideal conditions it will only produce Carbon Dioxide (CO2) and water (H2O). When using LPG for heating or cooking in a caravan, it’s perfectly normal for every appliance to produce a small amount of Carbon Monoxide. Under normal conditions, and with appliances in good condition, the level of Carbon Monoxide produced is very low and as long as there is adequate ventilation there’s no need to worry. This is especially true when cooking with LPG in your caravan – you should open windows and the door if possible to ensure maximum ventilation.

I made a computer fan (12V 120mm) extractor for the Troll
that velcroed in any of the three pop top vents so it could
be on the downwind side, just the job when cooking.

Quote: crow wrote in post #3

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I made a computer fan (12V 120mm) extractor for the Troll
that velcroed in any of the three pop top vents so it could
be on the downwind side, just the job when cooking.

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Yes the sockets on the end of the lights, Brian