The timeline below shows where the symbol Fog appears in One Flew Over the Cuckoo's Nest. The colored dots and icons indicate which themes are associated with that appearance.
...and they put something on his temples he becomes hysterical and starts hallucinating a thick fog, cold snow coming down. Bromden can hear Nurse Ratched rushing towards him through the thick... (full context)
...Ratched after her outburst while she sits in the nurse’s station. Bromden notes that the fog has disappeared. He remembers he’s supposed to clean the staff room during the staff meeting,... (full context)