Short Answer 
Carbon monoxide (CO) is a toxic, colorless, and tasteless gas produced from incomplete combustion of carbon-containing materials, and it can dissipate within 30 minutes in well-ventilated areas but may linger for hours in poorly ventilated spaces. To mitigate CO levels, increase ventilation by opening windows, turning off gas appliances, and using exhaust fans or air purifiers.
Step 1: Understanding Carbon Monoxide
Carbon monoxide (CO) is a toxic and combustible gas that is tasteless and colorless, making it undetectable by human senses. It consists of one carbon atom and one oxygen atom, bound together. This gas is produced during incomplete combustion of carbon-containing substances, particularly in low oxygen conditions. Additionally, CO plays a significant role in various chemical processes and has biological significance within living organisms.
Step 2: Carbon Monoxide Dissipation Time
The time it takes for carbon monoxide to dissipate varies based on the ventilation conditions in your home. In well-ventilated areas, CO can clear within 30 minutes, while inadequate ventilation may result in it lingering for several hours. Factors such as the type of fuel being burned and the amount of oxygen available also influence this timeframe.
Step 3: Mitigating Carbon Monoxide Presence
To effectively reduce carbon monoxide levels in your home, consider the following actions:
- Open windows and doors to increase fresh air circulation.
- Turn off all gas appliances that could be producing CO.
- Run exhaust fans to help ventilate the affected area.
- Optionally, use an air purifier designed to filter out CO.