Can ladybug tools evaluate the quality of indoor air environment?

Hi everyone, I want to evaluate the indoor air quality of a building, can ladybug tools simulate and output the indoor CO2 concentration? Or is there any other indoor air quality evaluation index that can be output?

EnergyPlus has some output variables for this, which would be meaningful if you add CO2 sources to your Honeybee energy model using additional strings.

How can we add CO2 sources to the Honeybee energy model using additional strings? Can anyone help, please?