My college chemistry professor said never to ingest anything made in a lab. Thus far, I have followed this rule and I have been fine, not that I have been around any chemistry labs since college.
A chemist broke this rule on YouTube by turning styrofoam into cinnamon candy that he ate himself, but he went through an extreme amount of effort to make it safe:
Yeah! I love NileRed (and blue). To be clear, it's not safe for someone without a lot of training to ingest a chemistry project and even then. Hopefully it didn't read like I was endorsing anyone to do so. Just that there's a history of that which we've walked away from (for good reason!) and that we wouldn't be here without some brave chemists to do the insane thing.
A chemist broke this rule on YouTube by turning styrofoam into cinnamon candy that he ate himself, but he went through an extreme amount of effort to make it safe:
https://youtu.be/zMaTrgUKC1w