@Moon @lain how about this gem from Down Under from 20 years ago with SARS.
Quotes:
"In a way they give some comfort to people who think they're doing as much as they can do to prevent the infection."
"... distributors and traders could be prosecuted if it was suggested the masks offered unrealistic levels of protection from the disease."
"I'm sure everyone would agree that it is un-Australian to profiteer from people's fears and anxieties..."
https://www.smh.com.au/national/farce-mask-its-safe-for-only-20-minutes-20030427-gdgnyo.html