These three were all idiots for taking any kind of drug from unknown illegal sources. Playing roulette.
Fentanyl is a terrible drug. You become addicted rapidly. You rapidly develop a tolerance and in large doses the drug sequesters in the lungs and then leeches out causing repository depressions hours after the original ingestion. Fentanyl is very potent and if the drug is not properly dosed you can end up dead very quickly.