A toilet flush can release up to 80,000 polluted droplets and leave them suspended a metre in the air for hours if the lid is left up, a new study has found.
Lai said he was not intending to add to public fear amid the outbreak of Covid-19, the disease caused by the new coronavirus, as his study was begun years ago. He said that even though closing the toilet lid could prevent flush water from spilling out, polluted particles might still be attached to the lid and released in the air on subsequent flushing.
Professor Iris Li Wai-sum, a member of the research team, said windows in the washroom should remain closed during ventilation to avoid drawing the polluted air back inside.
Ok, adult Pampers everyone
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