Hallucination
Many studies have shown hallucinatory experiences take place across the world. Several studies, one of them done as early as 1894, have reported that approximately 10% of the population experience hallucinations. A recent survey of over 13,000 people reported a much higher figure. According to the study, almost 39% of the people reported hallucinatory experiences. 27% of the people reported daytime hallucinations, mostly outside the context of illness or drug use. From this survey, hallucinations affecting smell or taste seem the most common in the general population.