No sane person wants to walk into a public restroom and sit on the toilet seat with something visible on it, like, for example, a certain yellow liquid. As a result, many people are dead-set on covering the top of a public toilet seat every time they need to go. Unfortunately, that method might be a mistake, says Better Homes and Gardens.
There's certainly a science that goes into building the modern toilet. It's no mistake that the toilet and it's seat are coated the way they are. Their surfaces are made to somewhat repel germs from sticking. When a person puts toilet paper on the seat, it gives germs a much greater opportunity to stick.
Most janitorial staffs and facility managers, as well as the people that make and sell the products they use, know about toilet plume — the nasty particles from inside the toilet that are flung around wildly every time flushing occurs. The trouble with toilet paper in a stall is, that every time the flush is initiated, the plume is shot right at the roll. So, in theory, a person is sitting on plume every time they cover the toilet.
To avoid the plume, Better Homes and Gardens suggests restroom users either opt for the bare toilet seat or carry in their own hygienic tissue.