CV and mad panic behaviour

[Baggers]

I think the general medical consensus is that they will have some effectiveness for what is essentially a respiratory illness spread by airborne particles. How much effectiveness is up for debate. But as you say, you lose nothing by wearing them. And if you move around in certain places, like supermarkets, maintaining a 1.5m distance the whole time is impossible.

I think that is a good summary. And your example is perfect. Also applies to public transport.

I don't think face masks are meant to be or are seen as a panacea. Simply another defense against harmful airborne particles.