Derald wrote:

Which reminds me of a pure silliness: In the mid 1960's, insecticide
residues on vegetables was the hysteria du jour among the then-stylish
generation of USAsians. On one occasion my wife and I dined with a woman who
announced that she had washed the ingredients with dishwashing liquid before
preparing the salad. True.

Now you may encounter folks who announce they rinsed their veggies in
dilute bleach to kill any bacteria. Plus sa change, plus sa mem chose.