Disinfectants have been around us almost since there was a cure. There are always bacteria and viruses. They are older than the shell itself. Without them, we probably wouldn’t be humans, because the bacteria we carry are mostly good bacteria that serve us primarily in the digestive system, but also many that seemingly harmlessly attack our bodies as aggressors, but do us a favor by helping our immune system to develop, strengthen, gain immunity, or learn about that and similar bacteria so that it can defend itself in the future.