Maybe it would make sense if this was all wok style cooking (though it's still extreme) but he has these fires up the sides of pots he's simply boiling stuff in. That's a good point that it might be from his ship, hadn't thought of that. I bet he would have had an argument on his hands when everyone else first saw that hazard.
Thing about Camping, I LOVE the smell of propane in the morning.
The Feds are not used to smelling their food cook.
The Maquis should be good with it though.
But from the stink of that gas burner, it should have been almost impossible for anyone from the core of the federation, raised on Replicators to have walked into that kitchen without vomiting.