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Wearing a mask is like being a flat-faced dog

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Dogs with flattened faces often have restricted breathing

Dogs with flattened faces often have restricted breathing

Dogs with flattened faces often have restricted breathing

The topic of wearing masks during the COVID-19 crisis has been controversial. The latest message is that, to limit the spread of the virus, we should all wear masks if we are likely to be indoors within 1 - 2 metres of other people for any prolonged length of time.

And we should do this not to protect ourselves directly, but to stop us from infecting others if we are carrying the virus. This is especially important if we happen to be asymptomatic carriers i.e. if we don't realise that we have been infected with the virus and that we may be inadvertently transmitting it to those around us.

The use of masks should reduce the overall spread of the virus through our society, and hence, if we wear a mask, we will protect ourselves in a roundabout, "big picture", way.