Reasons Behind the Bad Odor in Your Chinese Apartment Bathroom (And How to Resolve It)

      No, your stools are not suddenly much smellier now that you’re in China (though they might be). It’s not just you either: bathrooms here often have a stronger odor. If you’ve ever encountered a revolting, sulfuric sewer smell coming from your bathroom that you can't account for, you understand what we mean. Fortunately, there’s a straightforward explanation for this issue and several ways to address it.

      Understand the problem

      Are you ready for Plumbing 101? Wastewater from showers, toilets, and sinks in individual apartments flows into underground sewer systems through one or more central vertical pipes. The top of the pipe usually vents out through the roof into the open air, while the bottom connects directly to the sewer. In most Western countries, wastewater plumbing systems include P-traps, or U-bends, in every apartment. In fact, it’s illegal in many places not to have them. Besides catching valuable items that may accidentally go down the drain, these traps form a barrier between the sewer pipes and your home by maintaining a sufficient water level in the 'u'-shaped section. This barrier stops unpleasant (and harmful) sewer gases from entering your living space.

      As you may have guessed, many older buildings in China often lack this plumbing feature, and the absence of a P-trap is likely (though maybe not the only) reason for the unpleasant odors in your bathroom. Unless you want to embark on a major renovation project, the easiest solution is to establish a series of physical barriers.

      The main sources of bad odors are typically the shower drain, the washing machine drain, and the bathroom sink. Contrary to their bad reputation, toilets (which already have a water barrier) are not usually the source of that distinct smell we all know.

      So, how can you block these drains? Here are some useful products we’ve tested in the Beijinger offices over the years:

      For the shower drain

      For the washing machine drain

      For the hand basin

      But before you seal everything up...

      Clean the drains

      Take some time to find trapped hair and accumulated soap scum, and please stop using Draino. It’s needlessly harsh and not environmentally friendly. Our favorite alternative is cheap, effective, non-toxic, and consists of a mix of salt and hot water. Click here for more information.

      Now that you’ve cleaned things up, it’s time to establish some new habits, specifically...

      Stop flushing toilet paper

      We know this might seem gross. But you know what’s even grosser? Having to plunge your clogged pipes every day. The pipes in most Beijing buildings are simply too narrow and old for paper. Buy a small bin with a flip lid, some biodegradable liners, and dispose of the paper there. You’ll get accustomed to it.

      Create a pleasant-smelling environment

      Now that you’ve gotten rid of the bad smells, you can enhance your bathroom's fragrance with diffusers, incense, and scented candles. Or if you prefer a neutral odor, consider using activated bamboo charcoal, which is an effective odor absorber.

      Happy bathroom experiences, Beijing!

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