The old thread is here :www.mumsnet.com/Talk/am_i_being_unreasonable/4223631-What-have-you-always-wanted-to-know?pg=40
But I have another question. If you eat off-meat you have a fair chance of getting food poisoning.
But how is it that if I get something stuck in my teeth for hours and then swallow it, I don't get ill? Is it because it has been treated by the enzymes/bacteria in my mouth?