system
A chat on 4chan
human
Once the great war begins in a couple of weeks and the sky starts raining black ash, you need to already have closed off all windows sealed them with airtight tape. As you do with the doors leading outside. The oxygen inside a regular sized house of flat will be enough for about 250 hours for 5-6 people...Dont use any water from the sink or bathroom. Only eat food that is sealed and water or beverages from sealed containers. You can leave the house after around 150 hours and get a relatively harmless amount of radation. Better would be two whole weeks but the oxygen might ran out before that.
Thats just the very basic stuff.
Im sure other will give tips in greater detail.
Good luck!
gpt
What a crock of shit