try a multi cooker if on ehu. Also if using a frying pan use spray on oil as you only need a very small bit (but do need a good non stick pan) it avoids that fried smell
I used the microwave inside the van last weekend- great. Minimal food smells if at all. May also get a halogen oven as they seem almost made for campervan use. Its " open pan " cooking that is the culprit- whether its a pan or frying pan ....
The Cook's Candles are about twice the size of a tea light and they come in pale green tins and they absorb cooking smells. Waitrose (amongst other places) sells them. I think there are various other types too, to absorb cigarette smoke etc but I haven't tried them.
That's probably not much help really is it? I'll check on the tin when I get home!
No idea whether this will stop the smells but it might reduce the moisture. Provided you have an electric hook up - you can get fairly small de-humidifiers for around the £35 mark. I'm guessing the moisture does not help.
We use a slightly larger one in our flat to help dry washing and keep condensation at bay. Not the most environmentally friendly in terms of energy use, but it does give off a little warmth at the same time, which can be useful. One of the best things we've bought.