Why Are We Reluctant to Talk About Improving Indoor Ventilation?

This article suggests this difficulty in talking about the need to improve indoor ventilation may be because of its complexity. I think there is something else going on: easy to put COVID-19 preventive measures on the person (wash hands; stay distant; wear a mask; pursue vaccination) but harder to talk about measures that may well have to be addressed by others. After all, who will pay for all that increased better indoor ventilation in our schools and workplaces?