No. 102: Nov-Dec 1995
Recently, it was seriously suggested that people see ghosts in haunted houses because they ingest spores broadcast by psychoactive fungi growing on the old walls! This amusing idea turns out to be an old one, having appeared in 1883 in the Gentleman's Magazine. (Goodman, Arthur; "Ghost Potions," New Scientist, p. 54, July 8, 1995.)
Comment. Seems like the skeptics are grasping for straws? Or should we say "ectoplasm?"