In a new experiment, researchers used lasers to highlight airborne particles that are given off when uncovered toilets are flushed, which could spread dangerous pathogens.
Unnerving new videos show how gross it can be to flush toilets without a seat cover, particularly when using public restrooms. The stomach-turning footage shows how aerosol plumes shoot out of toilet bowls"like a rocket" when they are left uncovered.
In a new study, published Dec. 8 in the journal Scientific Reports , researchers used vibrant green lasers to illuminate aerosol plumes given off after flushing a lidless toilet, similar to those used in public bathrooms. Once these plumes were illuminated, the team used special high-speed cameras to film how the minuscule droplets moved through the air and track how far they spread. The results were much more alarming than even the researchers had initially predicted.
The new videos revealed that these airborne particles shoot out at speeds of 6.6 feet per second. This propulsion allows them to reach 4.9 feet above the toilet within 8 seconds, which"is a much more energetic and rapidly spreading plume than even the people who knew about this understood," Crimaldi said."We had expected these aerosol particles would just sort of float up, but they came out like a rocket.
Pathogens that lurk in feces include bacteria such as E. coli and C. difficile, as well as noroviruses and adenoviruses, which can all cause serious stomach and intestinal problems. The virus that causes COVID-19 can also be found in human waste, but it is unclear if it can be transmitted via toilet aerosols, the researchers wrote.
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