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While natural gas and propane are clear and odorless, gas companies inject them with mercaptan, a chemical that gives them a sulfur-like odor, mimicking rotting eggs. Though natural gas doesn't have an odor itself, gas companies have added a chemical called mercaptan to the supply that produces a sulfur smell when there's a leak. Install the filter at water’s point of entry into your home to ensure rotten egg sulfur smells are removed from your entire water supply. If both your hot and cold water smells like sulfur, the most likely cause is hydrogen sulfide gas in your well. With that said, sometimes the solution can’t kill all of the bacteria, and the bacteria can bounce back. In that case, you can try to boil out the impurities and increase the water temperature.
Other Ways to Identify a Gas Leak
Sinks, showers, floor drains, and toilets connect to the main sewer line, allowing water to travel through your pipes and out of your home. Sometimes a rotten egg smell has a simple explanation…like actual rotting eggs. Check your fridge and pantry for expired or moldy food and toss it in the trash.
Sewer Gas Leak
While candles surely improve the smell, it doesn't eliminate the cause. Yet these same wines can go bad rather quickly, taking on distinctly displeasing notes of rotten eggs or dirty socks. Scientists at Cornell University conducted a study of all the relevant compounds and came up with a few helpful tips for frustrated winemakers to keep canned wines from spoiling. The researchers outlined their findings in a recent paper published in the American Journal of Enology and Viticulture. Hire an experienced plumber to inspect your water heater and replace the anode for you.
Why does my water smell like rotten eggs?
If your house was built or remodeled between 2001 and 2009, there’s a slim chance that you could be smelling off-gassing from drywall made in China. While it’s not common, this type of drywall was manufactured with an excessive amount of sulfur. As a result, that drywall may be releasing hydrogen sulfide fumes—and a foul, distinctive stink—into your home. Do the sink test as described above, using cold water first and then hot water. If you notice the odor only when you run the hot water, the anode rod is the likely culprit. A licensed plumber can replace the existing anode with one made from an aluminum/zinc combination, which will run $200 to $400 and should eliminate the problem.
If You Smell Gas Inside of Your House

We’ll discuss the most common reasons for the foul odor and how to eliminate it, but unfortunately, each solution requires a professional’s help. Natural gas, sewer gas, toxic drywall, and mold cannot be addressed with DIY techniques. If you notice the rotten egg smell every time you walk past a drain, you’re smelling sewer gasses.
How to Get Rid of Mold in Shower Using Household Solutions

Either way, call in the appropriate pro—an HVAC pro or a pest control company—to fix the problem. After fixing critical issues by hiring a professional, consider applying low doses of abrasive Detergent to the affected surface. If spoilt food is causing nasty smells, remove it and scrub the surface thoroughly. In some cases, the smell may be temporary and harmless, caused by minor plumbing issues or infrequent use of drains.
If you only smell rotten eggs when hot water is running, odds are it's linked back to your water heater. Water heaters are constructed with anode rods that corrode and go bad over time. However, it probably won’t be a pleasant experience – nobody wants to smell rotten eggs when they’re trying to get clean – and you’ll probably want to address the issue. These particles then corrode the rod rather than the water heater tank. But, as the anode begins to fail, it can often cause the hot water to smell like sulfur or rotten eggs. Sometimes, the smell that appears to be coming from the drain is actually because of the water running down it.
There are a few common sources of the rotten egg odor around your property. High levels of sulfur can cause your water to have a distinct rotten egg smell. Natural gas has an odorant called mercaptan, which gives off a sulfur-like smell to help identify leaks. If you have a natural gas line near your property, it’s important to stay alert for this odor.
How to Remove the Rotten Egg Smell From Your Home
Consider the following next step if you just can't get the smell to go away. Front-loading washers make it easier to remove wet clothing after a wash cycle. But they also make it easy for mold to grow in the door’s rubber gasket and other nooks. And yes, the smell of a molder washer could eventually stink up your entire house. After removing the filters, consider washing and rinsing with hot water before returning to the treatment system. If the filter is not optimal, buy a new one for effective gas filtering and performance.
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We love our animal companions, but it’s easy to become noseblind to them. If they have free range of the house and you haven’t groomed or bathed them recently, now’s the time. Citrus peels are an easy DIY hack for cleaning your garbage disposal, but you could also call in a pro to see if it’s working properly in the first place. The Crown Choice Air Fresheners are contains essential oils and natural ingredients. The scent also lasts longer compared to other commercial air fresheners. You can eradicate the unpleasant egg odor with a scrubber and a tablespoon of Detergent.
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What Does a Gas Leak Smell Like? Plus, What to Do if You Detect One.
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In this guide, we’ve shared the causes of a sulfur smell in water, and the best methods to get rid of the smell once and for all. You can solve this problem on your own if you replace the magnesium anode. Turn off the water and locate the magnesium anode at the top of the heater.
If you notice any symptoms worsening as you move around the house, you might be dealing with a gas leak or another type of air contaminant. Other than discarding last week’s breakfast along with the rest of your old trash, you can prevent a smelly situation by maintaining your furnace. Annual maintenance, minor repairs, and tune-ups can keep your heating system running properly and prevent gas leaks.
But if it's just coming from a gas-powered furnace when you first turn it on, that's just the dust burning off. An anode rod, often made from magnesium, comes pre-installed in your hot water heater to attract particles in the water that lead to corrosion. Called a “sacrificial” anode, the rod gradually corrodes, which is the intent, as it keeps the inside of the hot water tank from corroding. Chemicals in the water can react to the anode, resulting is a sulfur smell indoors. If you have well water or a water softener, you’re at an increased risk of the anode having a chemical reaction to other elements in the water. Most commonly, however, it’s because of a gas leak, humidity levels, or mold growth.
The old wastewater sits in a full septic tank and new water cannot enter it properly. It takes an average of 5 years to fill a septic tank, but it varies based on the dimensions and usage. Consider a mild cleaning chemical for thorough washing if your floors are hardwood. Clean and wash the affected surface that smells like spoilt eggs with hot water for a fresh scent. About half of the homes in the United States use natural gas for heating, hot water, cooking, or drying clothes, according to the U.S. However, under normal circumstances natural gas is colorless and odorless, which could make gas leaks practically undetectable.
We can quickly find and fix the root cause if your furnace is noisy, not providing heat, or there’s a gas odor in your home. Aside from addressing urgent issues, we specialize in heater maintenance that can improve the safety, efficiency, and lifespan of your furnace. If you have toxic drywall in your home, even just a few sheets of it, I recommend tearing it out and having it replaced. If you’ve tried this method and are still noticing the smell, something bigger than evaporated p traps might be in play.
While mold growth in homes typically has a musky odor, some people may describe the smell caused by mold growth as the smell of rotten eggs. Instead, a substance that utility companies inject into the gas lines could potentially cause rotten eggs to smell in homes. Perhaps the most common cause of rotten egg smell in homes is gas leakage. Your home is the place where you want to relax and unwind after a long day, but if your house smells like rotten eggs, it is certainly not the most comfortable place. If your house has a natural gas connection, evacuate and call the utility company to rule out a gas leak. If a gas leak is ruled out, the egg smell may come from one of these seven sources.
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