Earlier quoted context omitted.
You think fentanyl is magic killing dust? What are you, one of those moronic cops who thinks they'll die from seeing fentanyl? They only way you're injuring someone with fentanyl is getting them to ingest an unsafe amount of it one way or another. That's not really different from a lot of prescription drugs. Or some OTC ones, like Tylenol. Or lye and many other cleaning agents.
The dose makes the poison. The LD50 for lye is 4,090 (rats) - 6,600 mg/kg (mice). The LD50 for fentanyl is 3.1 mg/kg in rats and 0.03 mg/kg in monkeys. So, very different.
The only way someone is ingesting that accidentally is if a classmate is attempting to poison them. There are a lot of other poisons that can be ingested in small doses if someone is trying to injure you. Fentanyl is not going to leap out of someone's pocket and fly down your throat. It's not magic killing dust.