According to supernatural belief across East and Southeast Asia, experiencing a sudden coughing fit at exactly midnight is a warning sign that a ghost or spirit is watching. This phenomenon is most often attributed to the presence of ancestral spirits or recently deceased individuals with unresolved business. The human body is said to respond instinctively to this presence, with the cough acting as a reflexive warning signal.
Variants of the belief include:
- The number of coughs indicates how many spirits are present.
- The severity of the coughing foretells the spirit’s mood—mild for peaceful visits, severe for unsettled or angry presences.
- Protective rituals may be performed afterward, including burning incense, offering water, or reciting prayers to appease or dismiss the watching spirits.


