Another good point. They will attract unwanted attention.
Cook fires may also attract unwanted attention as well. Not sure how to get around that one. We need to cook to made bread. Any ideas on how to get around that one. Cook at night?
If this is really a concern,
you should look into rocket stove “technology”.
Minimal wood, minimal smoke, maximum efficiency (due to very high draft).
As for the generator fuel question, you’d best be experimenting with wood gasifiers if you plan on using a generator after fuel supplies are kaput.
As for cooking bread without a fire, fergetit. Bread was my major in culinary school. ;)
Everything is going to draw attention. My buddy that lived 1/4 mile away from me in the mountains in New Mexico could detect when I was baking bread or roasting coffee, and always managed to show up just in time, even without visible smoke or flame.
Only thing for it is to unwant the unwanted attraction. Give gifts of lead and copper and send them on their way.
One benefit of the freeze dried foods is they only require boiling water. Any real cooking is going to generate smell. I supposed propane would create less cooking smell than a wood fire, also less smoke.
Maybe break into components. The cooking source smell and the food smell. Not much you can do about the latter.
A solar oven will bake bread. Though as JR says, it might attract attention, as will other cooking aromas, so you may want to go with a quicker cooking flat bread such as pita bread.