: Could a face masks prevent droplets even though it does not avoid virus infection? Yesterday, I asked a question here Why is there a contrast between facemask use in 1918 Flu and the COVID-19? [closed]. I am just curious

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There has been a lack of masks outside Asia. Instead of saying: We don't have enough masks the governments and health authorities announced: masks are not to protect the one who wears it but all others in the environment of an infected person who wears it.

Other arguments have been:

wearing a mask gives a false security
folks of western civilization don't know how to wear the mask correctly
they will even touch their face more often as they do without mask to reset the mask

Now as we have our own mask production outside Asia they say wearing masks could also protect all of us ... and in some countries (e.g. Austria) it will be obligatory to wear it in public and when working or shopping. Wonder if there will be enough masks then.

Could a face masks prevent droplets even though it does not avoid virus infection?

You mean: do the simple cheap face mask really protect of infecting others (by droplets)?

Experts suggest that in Asia they are worn against air pollution and not in purpose to protect others. They also say that these masks are too thin without a special filter.

So the change is true. But they might change from day to day. The purpose was to sensitize the population for the seriousness of the situation and to not provide a false security.