photo #4670833

///@facts: 😵 Carbon monoxide poisoning explains many of the occurrences in haunted houses, such as feelings of being watched, hearing footsteps or voices, seeing "ghosts", headaches, dizziness, and sudden death or illness of people or pets, and also strange behavior in pets such as excessive barking or meowing. The carbon monoxide theory also explains why some ghosts don't show up in photographs or videos (photographs that do show "ghosts" are usually caused by dust, insects, fingers or camera strap in front of the lens, and multiple exposures).⁠⁠Pesticides can cause the same types of hallucinations as carbon monoxide. Recreational drugs can also cause hallucinations. Unpleasant hallucinations are known in the recreational drug community as a "bad trip". Drug users are usually, but not always, aware that they are experiencing hallucinations related to the drug, at least after they become sober again. Toxic mold, which can produce hallucinogens, has also been linked to haunted houses.⁠⁠____