Even into the1960`s at Hunstanton, Norfolk, the public toilets vented into the sea, so all toilet refuse would reach the beach that folks ventured, I was a child then , and my father understood that, so would not let me enter the sea there... and i saw turds in the water... washing up on the beach.. Worse... the swimming pool and the boating lake, used seawater... pumped in - so stuff from the toilets went into those too... in the late 40`s and 50`s thousands of tourists every summer, used those toilets. and the beach the pipes ran out into the sea on. The idea that the Titanic, was unhealthy all those years before, is not singular, the toilet facilities for many were bucket and pour.. The Thames for example became so polluted not just by toilet refuse, but industrial refuse as well, that nothing, lived in its waters, except rats, the most survivable rodent we know. It is only since, that folks have used drugs and chemicals, and contagious diseases, that are far worse than s~~~ and piss... Piss is almost non reactionary initially.. its inactive.. so though not something one would do, by preference, pissing on a bleeding cut, is very unlikely to hurt one.. Touching dung ( s~~~) of any kind is also no worse than putting you hand in garden manure, and scooping up a handful - the rule is do not put it in your mouth.. The best way a human body can evolve to protect itself is by coming into contact with things that can harm it, and evolving a defence,,, the problem is that evolution cannot keep up with technology... that moves at faster and faster speeds. yet evolution gave us technology. nature in effect, provides its own killers, BECAUSE? nature has no bias. if it works, it will work it, and so death and life are just points in time.