On 29/03/2021 20:46, Ahem A Rivet's Shot wrote:
> On Mon, 29 Mar 2021 20:17:23 +0100
> Joe  wrote:
>
>> Occam's Razor says that there is a simpler explanation than 'hygiene'.
>
>  I'd guess cough etiquette[1] to be a major factor, along with the
> huge upswing in effective hand cleansing.
>
> [1] Just how long ago was the "coughs and sneezes spread diseases"
> campaign ?
>
1880?

--
“Ideas are inherently conservative. They yield not to the attack of
other ideas but to the massive onslaught of circumstance"

    -  John K Galbraith

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