Are ghostly visions caused by poor IAQ?

USA: Reported hauntings and ghostly manifestations might be caused by poor indoor air quality, according to scientists.

A team at Clarkson University in Potsdam, NY, maintain that human experiences reported in many hauntings are similar to mental or neurological symptoms reported by some individuals exposed to toxic moulds. It is known that some fungi, such as rye ergot fungus, may cause severe psychosis in humans.

The links between exposure to toxic indoor moulds and psychological effects in people are not well established, however,” said Shane Rogers, associate professor of civil & environmental engineering.

“Notably, many hauntings are associated with structures that are prime environments to harbour moulds or other indoor air quality problems. 

“Hauntings are very widely reported phenomena that are not well-researched,” he added. “They are often reported in older-built structures that may also suffer poor air quality. Similarly, some people have reported depression, anxiety and other effects from exposure to biological pollutants in indoor air. We are trying to determine whether some reported hauntings may be linked to specific pollutants found in indoor air.”

Rogers is working with a group of undergraduate students to measure air quality in several reportedly haunted places around the North Country, including the Frederic Remington Art Museum in Ogdensburg, NY. The team plans to gather data at several locations throughout the spring and summer and will publish their results at the end of the study.

By comparing these samples to samples from places with no reported hauntings, the researchers hope to identify factors unique to the haunted locations. They are looking for commonalities in the mould microorganisms in the places believed to be haunted compared to the controls, as well as analysing the types of toxic moulds that may cause psychological effects in humans.

As a longtime fan of ghost stories, Rogers said his goal is not to debunk the legends but to instead provide insight on why certain places are perceived to be haunted.

“What I do hope is that we can provide some real clues as to what may lead to some of these phenomena and possibly help people in the process,” he said.