In our household, we’ve established a simple rule: always lower the toilet seat after using it. Not only does this make sharing the bathroom a bit less unpleasant, but it’s also a matter of basic courtesy. As a woman surrounded by three guys, this rule is particularly important to me, especially to avoid those late-night bathroom mishaps where I might accidentally tumble into the bowl because both the lid and seat were left up.
Getting everyone to adhere to this guideline has been a challenge, but I think we’ve made significant progress. (If only I could teach my youngest to aim properly, I’d truly be in heaven. But alas, perfection is a lofty goal!)
The Dangers of Toilet Plume
However, it appears we need to take our toilet etiquette a step further—specifically, we should be closing the lid before flushing. The reason? It all boils down to something called toilet plume.
Yes, you read that right, and brace yourself: it’s pretty disgusting. Each time you flush, the force of the water sends tiny particles into the air—particles that can contain traces of urine, feces, and other unmentionables.
And it gets worse. According to Dr. Emily Johnson, an environmental health expert at the University of California, toilet plume can spread these particles throughout a surprisingly large area. Microbiologist Dr. Peter Thompson from Stanford University even states that this plume can reach up to 15 feet away. Yes, that’s right—15 feet! That’s far beyond the confines of my bathroom.
The reality is that toilet plume doesn’t just dissipate into thin air; it settles on surfaces in your bathroom, contributing to a delightful mix of germs on your sink, faucet, mirror, and even your toothbrushes. Gross!
Health Risks of Toilet Plume
Now, beyond the yuck factor (which is already a strong enough reason to start enforcing the toilet lid rule), how dangerous is this airborne contamination? Experts say that while it’s theoretically possible for it to make you sick, the risk is relatively low.
Not all germs are harmful, as Dr. Sarah Mills explains. “There are countless microbes in our environment, and not all of them cause illness. However, certain pathogens like E. coli, norovirus, and salmonella can certainly be present in toilet plume, particularly if you’ve been unwell.”
As of now, there’s insufficient research on how often toilet plume can cause sickness or how easily these aerosolized germs can lead to illness. The risk increases with direct contact with contaminated surfaces rather than just proximity to the plume. In higher-risk environments, like hospitals, the chance may be greater because of the more vigorous flushing systems and presence of sick individuals.
Takeaway: Close the Lid!
So, what’s the takeaway? While toilet plume might not always lead to illness, it can. Why take unnecessary risks? Experts recommend simply closing the lid before flushing. Dr. Thompson emphasizes that this is especially important in shared bathrooms. Even with the lid down, you should consider storing your toothbrushes and cups out of reach to avoid any potential contamination.
Implementing the “close the lid when you flush” rule might be met with some resistance at first, but it’s worth it. Just imagine the peace of mind knowing that your bathroom remains a safe and clean space, free from unwanted germs.
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In summary, while the toilet plume might sound like a trivial concern, it’s a good practice to start closing the lid when flushing. It keeps your bathroom cleaner and protects your health.

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