I'll dive straight in. I've considered going on the road for a while (first time) and am looking at heating options that are viable for a health issue. Needs to be fume free. Log burner is likely the easiest and quickest answer but is there another option that won't require a chimney? It's likely gonna be a small camper/Roma type or caravan.
I suppose it's gas then or oil maybe and that's gonna need some kind of venting. I've seen those caravan heaters that are built in and have ducting through living area behind the walls but I'm not sure if these are vented- I assume they're gas. It needs to be just warm air coming off metal.
If you have your log burners going and open the windows for a bit of fresh, is it likely to fill up with smoke?
I've often wondered if there are mini mobile gas central heating systems although it'd need an electric water pump to get to the rad.
I don't think there is an answer but worth a try.