 [ Symptoms ] what causes bloody noses in a preschooler it is always from her left nostril  she is not picking at it it just starts bleeding and there is usually blood in her mouth as well [ Disease ] the condition is called anosmia if you would like to research the many many causes since your ability to smell has not returned after five years it is likely that it could be permanent i do not believe that aromatherapy will solve or cure your anosmia