A typical American home uses 10837 kWh of electrical energy per year. That corresponds to 1.236 kW of average power usage. Given the average coal plant operates at 33.8% efficiency, that corresponds to 3.662 kW thermal generation. At 24 MJ/kg, this requires burning 0.152 grams of coal per second, generating about 0.447 g of CO2 per second.
Dividing the two, we calculate that the bold ecowarrior Leonardo, on his trip to the World Cup, was generating as much CO2 as required to supply electricity to 2860 American homes, or around 6000 people. A small town, in other words.