Using a public restroom is often an unpleasant experience, filled with sights and smells that can unsettle even the most resilient individuals. Yet, for most people, venturing into these spaces is an unavoidable part of daily life outside the home. So, how can we make our time in public bathrooms better, safer, and less gross? To find out, we consulted microbiologist Jason Tetro, known as "The Germ Guy," on HuffPost's "Am I Doing It Wrong?" podcast.
The Hidden Dangers of Flushing
Jason Tetro, author of "The Germ Files" and "The Germ Code," shared insights based on scientific studies. He noted that while toilet seats are often perceived as germ hotspots, the real concern lies elsewhere. "Every time I talk about toilet seats and toilets, I'm always saying, 'Well, it's not germy — everything is germier than a toilet seat,'" Tetro explained. However, he clarified that this conclusion is based on older studies from the 1970s conducted in controlled home environments where toilets had lids.
The Problem with Public Toilets
In public restrooms, most toilets lack lids, which is a critical factor. Without a lid, flushing can create what scientists call a "poo plume" — a spray of droplets and aerosol particles that can travel up to six feet from the toilet. "As a result of there not being a lid, there's that plume that comes from the toilet that ends up on the seat," Tetro said. He added that about 50% of public restroom toilet seats at any given time contain poo germs, with hundreds of particles present.
Health Risks and Precautions
These poo particles can harbor pathogens like E. coli, salmonella, or norovirus, which, in high concentrations, can cause illness. However, Tetro emphasized that simply sitting on a toilet seat is unlikely to lead to infection. "We do see potentially some low level of all sorts of different types of bacteria and viruses that could potentially cause an infection, but the reality is, unless you have a cut, then there's really no opportunity for that to get into your skin to cause a problem," he explained.
The Real Threat: Airborne Droplets
The greater risk comes from airborne droplets. Tetro advised flushing the toilet before use to get a fresh bowl and then leaving the stall immediately. "Make sure that you kind of get out of the stall for 30 seconds to let whatever was aerosol or the droplets to fall and then you can go back in," he said, noting that he follows this practice himself. He warned that if norovirus or harmful bacteria like E. coli 0157:H7 are present, exposure to high levels through inhalation could lead to infection, especially if standing near a powerful flusher.
"So if you're gonna go for the clean or for the fresh bowl, make sure that your face is nowhere near that plume," Tetro added. Similarly, after finishing your business, avoid lingering in the stall after flushing to prevent exposure to your own poo particles.
Additional Insights from The Germ Guy
In the podcast episode, Tetro also discussed other aspects of public restroom hygiene. He revealed the germiest part of a public restroom — which is not the toilet seat — and offered advice on what to do if there's no soap available. These tips are part of a broader conversation aimed at helping people navigate everyday challenges with better knowledge and safety.
For more detailed information, listeners can access the full episode of "Am I Doing It Wrong?" on various podcast platforms. The episode covers a range of topics, from car maintenance to health tips, ensuring practical advice for daily life. To stay updated, subscribe to the podcast and explore other episodes that address issues like managing anxiety, online shopping, and more.
Jason Tetro's expertise provides valuable guidance for minimizing health risks in public spaces, emphasizing that with the right precautions, using a public restroom can be a safer and less daunting experience.
