How long does it take for CO2 asphyxiation to kill you?

The time it takes for CO2 asphyxiation to be fatal can vary depending on the concentration of carbon dioxide and individual factors such as health and environment. At elevated levels (around 5% to 10% CO2 in air), symptoms can occur within minutes, and unconsciousness may follow shortly after. Prolonged exposure to very high concentrations (above 10%) can lead to death within a few minutes. Immediate medical attention is crucial in cases of CO2 exposure.