(CNN)Here's a good reason to put the lid down before you flush: a new computer modeling study shows how a flushing toilet can send a cloud of little particles containing fecal matter into the air -- fecal matter that could carry coronavirus.
Flush carefully. Study suggests coronavirus could spread in spray from toilet
Doctors have shown that coronavirus can live and replicate in the digestive system, and evidence of the virus has been found in human waste.
It's considered a possible route of transmission.
Now a team at Yangzhou University in China has used computer modeling to show how the water from a flushed toilet could spray up into the air -- as high as three feet, they wrote in the journal Physics of Fluids.
"One can foresee that the velocity will be even higher when a toilet is used frequently, such as in the case of a family toilet during a busy time or a public toilet serving a densely populated area," Ji-Xiang Wang of Yangzhou University, who worked on the study, said in a statement.
Other studies have strongly suggested that norovirus, a common cause of vomiting and diarrhea, can be spread via flushing toilets.
In April, researchers suggested that toilets might provide a way for coronavirus to spread.