Quick-Thinking Police Officer Uses Narcan to Save Toddler Who ‘Got Ahold of Some Fentanyl’ and Overdosed A California police officer was in the right place at the right time when a frantic mother flagged down his patrol car. Her unresponsive toddler had been exposed to the opiate fentanyl. Officer Aaron Khamosh managed to revive the child using Narcan, a drug developed to reverse the effects of an opiate overdose. In a Facebook post, Concord Police Department stated Khamosh was patrolling on March 26 when he was flagged down on Salvio Street by a woman. Her 2-year-old was unconscious on the back seat of a car and wasn’t breathing.