99K views · 331 reactions | Air purifiers do not remove CO2 from a room because they are designed to filter particles and other gases, but not carbon dioxide. The only effective way to remove CO2 is through ventilation, such as opening windows and doors to bring in fresh air. Using an air purifier in a closed room for a long time will cause CO2 levels to build up, which can lead to adverse health effects. | Mission Green Mumbai | Facebook