Read the full text here https://ici.radio-canada.ca/nouvelle/1812729/capteur-co2-dioxyde-carbone-commerce-covid-stop-pandemie
...
In the framework of a pilot project by the COVID-STOP group, Montreal businesses have installed carbon dioxide (CO2) sensors in their buildings in the hope of avoiding outbreaks and demonstrating how ventilation can play a protective role in controlling the pandemic.
---