Finally! An expert answers what to do when you're not on the loo. Bathroom etiquette runs the gamut from the nonnegotiable (put down the seat when you’re done, men!) to the debatable (should toilet ...

Castro says that closing the toilet lid before flushing should decrease the radius of aerosol plumes and minimize the likelihood of particles reaching respiratory zones, but it has not been proven. To ...

While toilet bowls are designed such that the contents are supposed to flush downward, scientists have known for decades that small particles – including those from water, waste and toilet paper – can ...