again: carbon is broadly harmless.
you can drink it. you can eat it - and you do eat it. lots of it. you're mostly water, but after that you're mostly carbon.
you're even carbon-based. you are.
do you know what the term organic means? it means carbon based.
there is only one caveat with carbon: it's dangerous when you inhale it in the form of smoke. like, when you buy a pack of cigarettes, for example.
but, whatever. i'm moving on.