Episode Title:Somethings Going Around.Episode Description:Peter falls ill, and Louis asks a doctor he met two days ago to come and take a look. It turns out the doctor has sent them potato crisps, which makes people allergic to ghosts, and only Peter has eaten enough of them. The doctor gives them more crisps. The Ghostbusters don't know, but the doctor is a ghost and they have to develop resistance to the allergy.