A lot of people think they are clean or that they keep clean when in fact, not so much. I have heard four different seniors from three families and three different cultural backgrounds remark that since they do not "work up a sweat" they don't need to bathe everyday and a wash cloth is enough. REALLY? I am here to testify, it is NOT enough. Their white t-shirts are not white and those stains do NOT come out! They are often ill to the point of being hospitalized! They do not keep clean.
Clean your body. Follow the instructions on any shampoo bottle. Lather rinse, repeat. Dry thoroughly with a clean towel.
Boiling water kills germs. It sanitizes better than slopping chemicals around on surfaces. I like using steam cleaners whenever I can, but in a SHTF world, I will be the one boiling clothes, cooking pots, pans and utensils as if I were going to do surgery.
Clean clothes, clean body, cooking with clean utensils, this is the way to a clean healthy life. Whether the stuff hits the fan or not, cleanliness is imperative. Keeping clean is a preventative measure and a treatment for common ailments.