Ventilation and Covid-19

a photo of bending grass on a sunny windy day

Listening to the radio this morning, I heard a public service broadcast about Covid-19.

The announcer rattled off the usual Рand vital Рcautionaries: mask wearing, keeping your distance and sanitisation. 

I groaned inwardly, expecting it to end there, but – to my very pleasant surprise – the announcer carried on and spent a bit of time encouraging airflow in a confined space (aerosol dispersal).

This is the first time I’ve heard anyone ‘in charge’ mention ventilation!

Masks help slow down or even prevent the larger droplets from leaving you and landing on someone else or ending up on your nose and mouth from someone else.

But they don’t do anything (except for the really good masks) for the tiny aerosols that pass through a mask, float in the air and can be breathed in.

Only ventilation (opening the doors and windows) helps this, or – perhaps – a good HEPA air purifier.

So when you spend anytime indoors with someone outside your bubble, open a window at either side of the room and encourage a through-draft.

Simple and effective!