Your body is 18.5% carbon atoms by mass.

All of your carbon atoms are from the food you eat, all of it ultimately from green plants.

Green plants get all their carbon from the atmosphere via photosynthesis.

1/3rd of the carbon atoms in the atmosphere got there via human industry (420ppm up from 280ppm).

This means that 6.17% of your body by mass literally flowed out of an oil well or was dug out of a coal mine.

You are 6.17% orc, and so is your dog. 😂