I wonder if the myth originated because the smell of cut onions tended to keep away the rats, which carried fleas, which transmitted the plague bacteria? Many such beliefs started with accurate observations, which then led to incorrect conclusions about the mechanism because the science was not understood at the time.
I wonder if the myth originated because the smell of cut onions tended to keep away the rats, which carried fleas, which transmitted the plague bacteria? Many such beliefs started with accurate observations, which then led to incorrect conclusions about the mechanism because the science was not understood at the time.