In a store

The charming pharmacy in our small town has a low ceiling and is very long and narrow. The pharmacy counter itself is right at the back. I was picking up some medication at the counter one day and - shock, horror - look at the CO₂ reading: 958ppm in an almost empty store.

Luckily none of my children were with me - because they would have dropped to the floor and hyperventilated with embarrassment - as I showed the reading to the pharmacist. He was very concerned and said he would have a think about what could be done. 

I returned a week later for something or other and had forgotten all about it, but as I walked into the pharmacy from the street I noticed a breeze blowing on my face and the reading had halved to 487ppm.

 

The pharmacist told me proudly that they now keep the back door open, had switched off the free-standing fan at the front door, which was blowing the air-conditioned air back in, and now everyone felt better. 

Sometimes, very simple measures are all it takes. 

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