No one likes a stinky house, and especially not a stinky shower. That smell is coming from the drain, but oftentimes, it’s not clear exactly what is causing it. Is it mildew? Sulfur (that rotten egg smell)? Something else? The fact is, it could be any number of things. In this post, we’ll explore some possible causes, solutions, and ideas for prevention.


Your shower drain should be equipped with a strainer or stopper. These prevent hair and other debris from clogging up your pipes, but all that gunk can get caught in the strainer itself. If that’s the case, it will eventually start to stink. 

Simply remove the drain cover, and you’ll be able to pull some of the buildup out by hand. If you really want to get down and dirty, use an old toothbrush to reach down into the drainpipe and clean the drain cover while you’re at it.


Mold or mildew can grow in places where water can get trapped and become stagnant. This can smell bad, be unsightly, and even be unhealthy. Sometimes water can accumulate (and cause mold) just underneath the drain cover, and not go down the drain. If that’s the case, you should thoroughly clean the drain cover, and regularly spray mold or mildew prevention solution on the area.


Most DIY plumbers are familiar with the P-trap under the kitchen sink, but this U-shaped piping is actually an important part of any of your household drains. The kink in the pipe is actually meant to collect water that prevents fumes from coming up from the sewer into your home. If your bathroom is starting to smell like rotten eggs – it could be a problem with the P-trap!

You can test this by pouring a couple of cups of water down the drain. After about an hour, remove the drain cover and use a flashlight to see if you can still see the water. If it’s gone, you may have an issue with your P-trap!


Most people hardly even notice some of the air vents on the roof of your home. You may not even realize that some of these vents, called vent stacks, are connected directly to your plumbing. These vents allow air to escape from your pipes so that water can get through. Once again, a problem with the vents can lead to a bad smell! Make sure the area around the vent is clear of any debris.


Like many of our posts, we offer some advice for novice plumbers. But there are some jobs that are better left to the pros. Any of the issues above can be thoroughly checked out and repaired by the experienced staff at Trenchless Replacement Specialists. If there is a clog, we can use our advanced equipment to locate and fix it with no digging. Call us today for an appointment at 432-580-7693. No Mess, No Stress!