What is the cause of the bad odor emanating from the body of a clean and devout girl? Is it a rare organic disease or a spiritual matter related to jinn? And what is the appropriate treatment for it?

The conditions for a prayer to be answered are summarized as submission to Allah Almighty and belief in Him. Among the impediments to a prayer being answered are haste and abandoning supplication. The supplicant should begin and end their supplication with praise of Allah and blessings upon the Prophet, peace be upon him, and seek out times when prayers are answered. One must trust in Allah's promise and be patient during tribulation, as it is a cause for great reward and expiation of sins.