I may have mentione this before, but will do so again. Joyce Collin Smith, in her book Call No Man Master may be a good resource if you have not already found it.
Her book gives a description of Pak Subhud and her experiences of the Latihan. She recalled smelling what seemed like incense, and her daughter did, too.
But, later, Joyce had grave misgivings. People, including personsl like her
Forum:
Recovery from Destructive Cults and Groups