A Dutch study, summarized here.
‘After a single cough, it takes about five minutes for the number of small droplets in the air to be halved,’ the researchers said. These tiny droplets are therefore much more dangerous when it comes to possible transmission of coronavirus. When the same experiments were repeated in a well-ventilated room, the results improved dramatically. With only mechanical ventilation turned on, half of the droplets disappeared within 2.5 minutes, but in a room that also had a door and window open, the number of droplets was halved after 30 seconds – ten times faster than in the unventilated room.
‘After a single cough, it takes about five minutes for the number of small droplets in the air to be halved,’ the researchers said. These tiny droplets are therefore much more dangerous when it comes to possible transmission of coronavirus. When the same experiments were repeated in a well-ventilated room, the results improved dramatically. With only mechanical ventilation turned on, half of the droplets disappeared within 2.5 minutes, but in a room that also had a door and window open, the number of droplets was halved after 30 seconds – ten times faster than in the unventilated room.
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