
Oraginc chemistry is mainly based on carbon. Everything we eat has carbon atom, except for the salt which is NaCl. If a molecule doesn't have a carbon, then it's not an organic compound. You flush/skin has carbon atoms. If you throw acid at somebody the skin will be destroyed due to breaking of the peptide bonds we have. A peptide bond between nitrogen and a carboxyl group (Carbon doubly bonded to an oxygen). Carbo is every where. As an atom C isn't dangerous. But there are many toxic carbon compounds like benzene, pyridine( hetrocycles) etc. Those are carcinogen