this happens in a catalytic converter inside cars through the procces of adsorbtion and desorption
NO and CO react to give unharmful gasses CO2 and N2
N0 + CO -----> N2 + CO2
now balance 2NO + 2CO -----> N2 + 2CO2
NO and CO react to give unharmful gasses CO2 and N2
N0 + CO -----> N2 + CO2
now balance 2NO + 2CO -----> N2 + 2CO2