How can you increase carbon dioxide in your home?

To increase carbon dioxide levels in your home, you can use gas appliances like stoves or heaters that burn fossil fuels, as they release CO2 during combustion. Additionally, introducing more indoor plants can also help by creating a balance with their respiration processes. However, it's important to ensure adequate ventilation and monitor air quality, as excessive CO2 can be harmful to health. Consider that elevated CO2 levels are typically not recommended for indoor environments.