Interesting because I leave my grandmothers silver spoon in my coffee, tea, or whatever I'm drinking. Granny did that too. I guess it made her feel safe, idk. You know back then, they didn't pasturize anything, they just ate what they had. I will say she made the best butter I've ever tasted and it's so easy to make, but it doesn't taste the same with pasteurized milk no matter how hard I try.
She left her eggs out all day too and no one died of food poisoning. Keeping eggs in the fridge is a western thing. Both my grandmothers left their eggs out. They didn't have access to refridgeration.