Subject: Why does hemoglobin accept carbon monoxide better

When oxygen and carbon monoxide are present, the carbon monoxide will always be
"chosen" by the hemoglobin rather than the oxygen which actually is what the
body is needing. Is there a reason chemically why the carbon monoxide bonds
better, and is there a reason why overall the carbon monoxide bonds with the
hemoglobin better, like if the carbon maybe has a reason for bonding better than
oxygen in a non-chemical or molecular level?

Re: Why does hemoglobin accept carbon monoxide better