New York ( CNN ) -- Two workers at New York 's John F. Kennedy Airport post office were exposed to phosphoric acid Sunday from a package that originated from China , a law enforcement official said . The package was identified after workers smelled an odor emanating from it , the official said . A hazardous response team from the FBI responded to the airport `` out of an abundance of caution , '' said Peter Donald , a spokesman for the FBI in New York . The product was identified as organophosphate and secured by Port Authority police . The package was contained to the post office , and airport operations were not affected , the official said . Donald said the package `` was determined to be beauty supplies . '' The two workers -- identified by another law enforcement official as Customs and Border Protection employees -- declined medical attention . Phosphoric acid is a colorless liquid with a syrupy consistency used as an acidifying agent to give colas their flavor .
China : ' ` ` determined to be beauty . '' . Customs employees decline medical treatment , officials say . The phosphoric acid was found in a shipment originating from China .