there is research on carbon dioxide (CO2) emissions from humans, including

 Yes, there is research on carbon dioxide (CO2) emissions from humans, including:

How much CO2 do humans exhale?

On average, a person exhales about 500 liters of CO2 per day, which is roughly 1 kilogram in mass. Each breath from an adult contains 35,000 to 50,000 parts per million (ppm) of CO2, which is 100 times higher than the amount found in the air outside. 

How does temperature affect CO2 emissions?

Chamber experiments have shown that temperature has a strong influence on CO2 emissions from humans. 

How do humans contribute to CO2 emissions in urban areas?

Research shows that human metabolism can explain the diurnal pattern of CO2 flux in urban areas. In some populated cities, human respiration contributes more to CO2 emissions than oil burning. 

How do dermal emissions contribute to CO2 emissions?

Chamber experiments have shown that dermal emissions contribute about 3.5% of a person's total CO2 emissions.