Guess how the virus is hitching a ride up your nose - the aircon

World

Guess how the virus is hitching a ride up your nose - the aircon

All that recirculated air could be boosting the spread of viral particles, experts say. Their advice? Open a window

Anne Gulland

Air conditioning units that recirculate the same air should be switched off or only used with open windows, urge experts, after the World Health Organisation pointed to “emerging evidence” of airborne transmission of coronavirus.

Experts said air conditioning units that only used recirculated air could exacerbate the spread of virus particles if someone was infected with Covid-19.

Dr Shaun Fitzgerald, a fellow at the Royal Academy of Engineering, said there were two types of air conditioning units – ones that take air in from outside and expel it, or those that recirculate the same air. This second type, known as a “split” unit, draws air in, passes it over cooling coils and sends it back out...

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