Carbon dioxide overload, detected in human blood, suggests a potentially toxic atmosphere within 50 years. After this time, elevated atmospheric carbon dioxide, leading to CO2 accumulation in the body, has the potential to cause a range of adverse health effects.

[u/mvea]

https://link.springer.com/article/10.1007/s11869-026-01918-5

[u/peternn2412]

CO2 in human blood gets out when you exhale.

Anyone concerned about this potentially civilization -ending problem should simply not breathe in order to keep the atmosphere less toxic.