Every now and then I see someone wearing a mask out on on the street or in a shopping centre. Obviously this is a reminder of the SARS outbreak when almost everyone in Hong Kong (apart from a few stubborn gweilos) wore masks. At the time I thought it was a complete over-reaction given that the risks of catching SARS from travelling on public transport was tiny and the risk of catching it when walking in the street must have been almost non-existent. I suppose it was understandable, but the effect was to make the problem seem worse than it was. Plus there was a lot of evidence that most masks weren’t terribly effective.
So my first reaction on seeing someone walking along the street wearing a mask is to wonder why are they doing it. Are they worried about catching something, or are they being very considerate and trying not to spread their germs to other people? Would it make any difference if people with colds did wear paper masks, or is it just a waste of time?
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