Baking soda is used to get the body ph level to the same as your blood, 7.6, cancer cells like an acidic place to 'settle in' Urin would be better than saliva as your mouth is supposed to be acidic as it is part of the stomach. Having an ozone machine at home would be a good idea also as it kills airborne pathogens, breathing in some of that 'extra oxygen' for a few minutes will do the same for the cells in the body, cancer cells do not like an oxygen rich body. You can even build your own generator for cheap or buy a built one with all the bells ands whistles. Without power you are ****ed, first aid is a bottle of peroxide and a book on how top properly bury the dead.
Having real silver on hand is also part of bush living as it is a first aid product.