How does inhaling carbon decrease the oxygen level in your blood?

Inhaling carbon does not directly decrease the oxygen level in your blood. Carbon is a non-toxic, non-flammable gas, and it is not harmful to breathe in small quantities. However, inhaling high concentrations of carbon can lead to asphyxiation, as it displaces oxygen from the air and prevents the lungs from taking in enough oxygen. This can lead to a drop in blood oxygen levels and eventually death.