I mentioned previously that you should have a water purifier and a generator in your home, as when the apocalypse hits, the electrical grid will most likely collapse. But, I also recommend getting a battery-operated air purifier. With the abrupt switch in the Earth’s axes, dirt, pollens and other crap will be hurtled into the air and ultimately pose a threat to everyone’s respiratory systems. Cleaning up the air within your home will help to prevent such easily-transmittable ailments as tuberculosis, measles, influenza and gingivitis. It’s a somewhat expensive investment, but critical to your survival. Besides, an air purifier will help eliminate bad odors from decaying bodies and anyone in the house who suddenly develops gas problems.
Chief Writing Wolf 