“…Phantosmia is the qualitative disorder of olfaction characterized by the perception of odor, usually unpleasant, when there are no odorants present . It may be described as cacosmic (rotten, decayed, fecal), torquosmic (burned, metallic, chemicalâlike), or mixed . Phantosmia is a relatively uncommon disorder of olfaction and represents around 10% to 20% of olfactory disorders among those complaining of olfactory dysfunction .…”