What smells like rotten eggs in a house?

This smell is probably septic gas, unless you have a carton of eggs hiding in your living room. Septic gas has a strong, naturally occurring odor that smells like rotten eggs. The smell is hydrogen sulfide, which comes from sewage and indicates a potential issue with your plumbing.
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Does carbon monoxide smell like rotten eggs?

Does carbon monoxide smell like rotten eggs? One reason carbon monoxide is so deadly is that it doesn't have a natural odor. The sulfurous, rotten-egg scent you sometimes smell in a pilot light or other natural gas is mercaptan. It's added to natural gas, so it's easier to know if there's a leak.
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What else smells like rotten eggs?

What is hydrogen sulfide? Hydrogen sulfide is a colorless, flammable gas that smells like rotten eggs at low concentration levels in the air. It is commonly known as sewer gas, stink damp, and manure gas. At high concentration levels, it has a sickening sweet odor.
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What gas in the house smells like rotten eggs?

Hydrogen sulfide (H2S) is a colourless gas with a characteristic odour of rotten eggs which being denser than air may pool in low areas in still conditions.
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What toxic product smells like rotten eggs?

Hydrogen sulfide (H₂S) is a colorless gas with a strong odor of rotten eggs. Exposure to hydrogen sulfide may cause irritation to the eyes and respiratory system. It can also cause apnea, coma, convulsions; dizziness, headache, weakness, irritability, insomnia; stomach upset, and if liquid: frostbite.
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Why Does my House, HVAC, Smell Like Rotten Eggs? Conditioned Air Solutions, Huntsville AL



Why do I suddenly smell like rotten eggs?

Serious liver disease can make breath smell musty or like garlic and rotten eggs. Compounds that are transported through the blood can also be released through your sweat glands. That can make your armpits and skin smell bad. It's normal for stress to cause smelly compounds to be released through your sweat.
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What are the symptoms of sewer gas poisoning?

Symptoms of headache, nausea, dizziness, or drowsiness may indicate exposure to an odorless gas like methane or carbon monoxide, or to hydrogen sulfide, which smells of rotten eggs. Anyone experiencing severe symptoms should seek immediate medical care.
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Why does my house suddenly have a bad smell?

A weird smell in a house can come from numerous sources, including appliances, furniture, carpets, fabrics or issues like mold or mildew. Occasionally, odors may be caused by sewer gas, natural gas leaks or animals that have died between walls, in attics or under decks.
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Why does my house suddenly smell like sulfur?

The most dangerous cause of a rotten egg smell is a gas leak. When you smell sulfur in the home, go outside and contact a local gas professional. Once a pro rules out a gas leak, troubleshoot other causes like drain pipe issues. Other causes of the rotten egg smell include sulfuric well water and broken drain pipes.
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How do you tell if a rotten egg smell is a gas leak?

For easier detection, we add a safe, non-toxic (but unpleasant) odorant called mercaptan into the gas that's inserted into the distribution system. The scent resembles rotten eggs or sulfur. If you smell it, you'll quickly know you have a gas leak and should leave your house or building immediately.
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What does electrical fire smell like?

An electrical fire smell is often described as a “burning plastic” smell. This is because when wires overheat, the insulation surrounding them begins to break down and release chemicals into the air. These chemicals can have a strong, acrid smell that can be difficult to ignore.
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Does mold smell like rotten eggs?

#5 Mold, Mildew, and Other Bacteria Building Up

Mold and mildew may be the cause of the rotten egg smell coming from your laundry room. As with any place that has high humidity — mold, mildew, and other fungi are more likely to flourish, particularly in darker, damp places.
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Can electrical problems smell like rotten eggs?

Rotten Eggs

The two most common sources for rotten egg smell in the home are electrical components (inside of outlets for example) or a natural gas leak. Natural gas manufacturers are required to add a chemical, called mercaptan, to their gas in order to make it easier to detect a leak.
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Should I leave my house if I smell rotten eggs?

When you smell the dreaded rotten-egg-sulfur-odor wafting around your house, caution is king. And we'll just say this now: If there's even the slightest chance that you could have a gas leak, leave your home and call your utility company or the fire department right away.
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What does a gas leak smell like in a house?

You notice a rotten-egg smell

In its original form, natural gas is colorless and odorless. To help detect the smell of gas, a harmless chemical called mercaptan is added to give leaked gas a distinctive odor. Most people describe the scent like rotten eggs or a hydrogen sulfide odor.
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Why can I smell eggs in my house?

If you detect a rotten eggs smell in your neighbourhood or around your home, it is likely that you are in the presence of hydrogen sulphide (H₂S). H₂S comes from sewage treatment plants, sewerage systems and wastewater treatment plants. Also known as sewer gas, it is extremely toxic to humans.
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What does carbon monoxide smell like?

Carbon monoxide gas is colourless and does not smell, so you cannot tell if it is around you. Symptoms of carbon monoxide poisoning include: headache.
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Does natural gas smell like rotten eggs?

Natural gas has no odor. Gas companies add a harmless chemical called mercaptan to give it its distinctive “rotten egg” smell.
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What smells should I worry about in my house?

A musty or dusty smell is often a sign of mold or mildew, especially in humid or moisture-prone environments like the basement, laundry room, kitchen, or bathroom. Mold and mildew can create severe respiratory problems and can exacerbate allergies and asthma in sensitive individuals.
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What does black mold smell like?

It's often described as musty and earthy, and may even smell like rotting vegetables or plants. You might notice a musty smell, but not be able to see any mold growing. In this case, you should look for areas that might be exposed to water.
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How can you tell where a bad smell is coming from?

If it is outdoors, or if the windows are open, then the smell is stronger near the source. Moving your nose from place to place is a way to determine the gradient of concentration of smelly molecules. Follow the direction of the gradient to locate the source.
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Can a house explode from sewer gas?

Methane, one of the components of sewer gas, is highly flammable. It's the gas used to heat stoves. So if sewer gas leaks into your property and concentrations of methane build up, you can inadvertently cause a serious explosion or start a fire, by lighting a match.
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Can sewer gas come up through the toilet?

When it gets clogged, the sewer gases can back up into the sinks and the toilet, resulting in your bathroom's sewage smells. You may experience a bubbling sound coming from the toilet or the drain as sewer gas forces its way into the bathroom.
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What does a broken sewer line smell like?

Weird odor or gassy smell

If you have a broken sewer line, your nose will tell you. There should never be smells of any kind coming from your drains. What you may be smelling could be toxic sewer gas that is slowly but surely making its way into other areas of your home.
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