The rest of the fire risk will be from all of the things you bring into the bunker. Your power system could spark a fire, and your supplies could provide it fuel. And while you’ll probably (hopefully) also have fire extinguishers in your bunker, even a small fire could be a serious risk for the oxygen levels in your bunker. Fire uses oxygen, and you need to be sure your ventilation system can replenish that oxygen very quickly.
Cooking fats can be substituted in most cases with the exception being frying. Some oils and fats have a lower smoke point than others. I have never had any luck using olive oil for trying to fry potatoes to a crispy state but grape seed oil, peanut oil, or lard does just fine. Pie crusts made from lard, flour, salt, and a little water are really good. You really don’t need butter to make a flaky crust if you have lard.
If you are bugging in over the long-term, you will need a water-collection system of some kind. A rain barrel is the simplest option. Be sure to have at least one or two of these on your property and you can capture rainwater. Even if you live in an apartment with a balcony, you can use a rain barrel to collect water. Just don’t catch it as runoff from the roof as most roofing tiles contain chemicals that can contaminate the water.
Among the original residents was famed television newscaster Tom Brokaw, who lived there when he was just a boy along with his family. Brokaw wrote fondly about his time at Fort Igloo in his memoirs, “While my Dad was at work in igloo, Mother was at home with three boys under the age of four. My youngest brother, Mike, had been born at the base, just fifteen months after Bill. We were confined to that small space during the harsh winter months, and yet I cannot recall any sense of hardship or any bickering between my parents. As my mother likes to remind me, "Everyone was in the same boat."
I think most phones get emergency alerts like that for their area codes. I get general warnings and Code Pinks (abducted children) sometimes. But the apps I recommend are both broader and more specific. For example, with Disaster Alert, I not only get tornado and flood warnings in my area, I also get notifications for any severe weather headed towards me and things like medical alerts for flu and whatever.
One major upside of freeze-dried food is its convenience. Since all its water content has been removed—via a process that involves exposing food to subzero temperatures, while removing the resulting water vapor with a vacuum—it’s easier than canned goods to transport on the fly. To “cook” Wise Company’s six-grain Apple Cinnamon Cereal, you just boil three and a half cups of water, dump in the powdery contents of the bag (minus the oxygen absorber), and cover the pot for 12 to 15 minutes.
It isn't hysteria, and GMO isn't 'evolution'. One of the biggest issues for preppers and survival is that GMO seeds will not reproduce in the same way if the seeds are saved and re-used. In fact, in many instances (maybe all?), it's illegal to save the seeds and re-use them! It's far better to track down heirloom seeds that are native to your area and/or compatible with your climate. A good place to start looking is ×