With dirty door handles, heavily trafficked toilet bowls, and proximity to strangers, public restrooms can be a germophobe’s worst nightmare. But the COVID-19 pandemic adds a new layer of risk, and infectious disease doctors are urging people to be cautious.

A recent study published in Physics of Fluids outlines the potential dangers of toilet plume—clouds of droplets that can rise 3 feet from a flushing toilet and be inhaled by an unsuspecting user. Aside from the obvious ick factor, simulations found that coronavirus remnants in a person’s stool can make their way onto other surfaces or linger in the air nearby.

Read the full story in WebMD.