Now for a more advanced prepper item. I will spare you the wide angle lens needed for my size CBRN suit, and just include the gas mask.
Do I believe I will need it? No, but there is a possibility, so I have included it. Along with the iodine capsules needed to make this effective. Do I recommend that you run out and buy this setup? That depends, on how prepared you are already, and how prepared you want to be, overall.
If you are ready, and do decide to buy this setup, remember that you need the iodine, and a Geiger counter, or a leaf type raduation dosiometer, too. I have both, but I like toys. I do use the Geiger counter on sample ID, and to sort out one specific gemstone.