The most common ways we’re wearing face masks incorrectly

An expert explains why scarves and masks with holes cut in them are less effective at preventing the transmission of coronavirus

Face masks have become a standard feature of everyday life, mandatory in most indoor settings. But despite being designed to completely cover the nose and mouth , it’s not uncommon to see them pulled to one side or resting on the chin – much to the annoyance of the general public. Here are some of the most popular versions – and expert opinion on why they don’t work.

The trapdoor

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