Paranormal entity or ghosts can generate different smells and odors in a phenomenon called "olfactory apparition," according to experts from Manchester Paranormal Investigations. Ghost and paranormal entities generate smells and odors often to call the attention of someone and make their presence known. The type of smells created by ghosts and paranormal entities are often linked or related with the entity.
In reported cases of paranormal activity the odors generated by ghosts greatly vary, and may include perfume or cologne, floral scents, smoke and tobacco smoke. Malevolent spirits and demonic entities generate unpleasant odors such as the smell of feces or decomposing flesh. Paranormal investigators find it challenging to document olfactory apparitions as there are no means to accurately record odors.