sentences:  Godfrey's Cordial, as well as other tonics given to children that consisted of opiates, used sassafras to disguise other strong smells and odours associated with the tonics.It was also used as an additional flavouring to mask the strong odours of homemade liquor in the United States.Commercial "sassafras oil," which contains safrole, is generally a byproduct of camphor production in Asia or comes from related trees in Brazil.