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ODORS GASES SMELLS, DIAGNOSIS & CURE
AIR POLLUTANTS, COMMON INDOOR
AIR QUALITY IMPROVEMENT STRATEGIES
BOOK MOLD, Moldy Book Cleaning
CAR MOLD CONTAMINATION
CAT DANDER in buildings
CHEMICAL CONTAMINANTS in WATER
CHEMICAL ODOR SOURCES
CHLORINE IN DRINKING WATER
COMBUSTION GASES & PARTICLE HAZARDS
DIRT FLOOR MOLD CONTAMINATION
DUCT SYSTEM & DUCT DEFECTS
EMERGENCY RESPONSE, IAQ, GAS, MOLD
Fireplaces & Woodstove Contaminants
FLOOD DAMAGE ASSESSMENT, SAFETY & CLEANUP
GASES, EXPOSURE, TESTING
GAS DETECTION INSTRUMENTS
GAS EXPOSURE LIMITS & STANDARDS
GLUES ADHESIVES, EXTERIOR CONSTRUCTION
HEATING OIL EXPOSURE HAZARDS, LIMITS
INDOOR AIR HAZARDS TABLE
INDOOR AIR QUALITY & HOUSE TIGHTNESS
INDOOR AIR QUALITY IMPROVEMENT GUIDE
LIGHT, GUIDE to FORENSIC USE
GAS LP & NATURAL GAS SAFETY HAZARDS
METHANE GAS SOURCES
MILDEW in BUILDINGS ?
MOISTURE CONTROL in BUILDINGS
MOLD ACTION GUIDE - WHAT TO DO ABOUT MOLD
MOTHS, MOTHBALL ODORS
MSDS Material Safety Data Sheets
MVOCs & MOLDY MUSTY ODORS
ODORS GASES SMELLS, DIAGNOSIS & CURE
OIL, HEATING, EXPOSURE HAZARDS, LIMITS
OIL HEAT ODORS & NOISES
OIL TANK LEAK & ODOR CAUSES
OIL ODOR SOURCES
OUTHOUSES & LATRINES
OZONE for MOLD OR ODORS
PET ALLERGENS / PET DANDER
PET STAINS & MARKS in BUILDINGS
PET STAINS on WALLS
SEPTIC SYSTEM ODORS
SEPTIC TREATMENTS & CHEMICALS
STAINS on & in BUILDINGS, CAUSES & CURES
STAIN DIAGNOSIS on BUILDING EXTERIORS
STAIN DIAGNOSIS on BUILDING INTERIORS
THERMAL IMAGING MOLD SCANS
UREA FORMALDEHYDE FOAM INSULATION, UFFI
URETHANE FOAM Deterioration, Outgassing
VENTILATION in BUILDINGS
VINYL CHLORIDE HEALTH INFO
VINYL Siding or Window PLASTIC ODORS
VOCs VOLATILE ORGANIC COMPOUNDS
WATER TEST CHOICES & WATER TEST FEES
WATER TREATMENT EQUIPMENT CHOICES
How to find and fix the source of sulphur odors and smells in buildings: this article and its companions discusse the common sources of rotten egg odors, sulphur odors or sewer gas smells in buildings and traces them to their possible cause.
Examples of sources of sulfur smells in or around buildings include Chinese drywall outgassing, dangerous sewer gas leaks, plumbing vent defects, sulfur in drinking water, water heater bacteria, and more. We describe safety, explosion, and bacterial hazards associated with sulphur gases and sewer gases in buildings. Our page top photo shows a subtle clue that can explain a sulphur odor in buildings: discolored copper piping on the air conditioner cooling coil caused by outgassing from Chinese drywall.
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How to Find & Fix Sources of Sulphur Odors or "Rotten Egg Smells" in buildings Include Smells Associated with Chinese Drywall & Other Causes in buildings
This article series about building odors discusses the diagnosis and cure of odors from a variety of sources including animals including pets, dogs, cats, or unwanted animals or dead animals, formaldehyde odors in buildings from building products or furnishings, plumbing drains, plastic or vinyl odors from building products, flue gases, oil tanks or oil spills, pesticides, septic odors, sewer gases, and even abandoned chemicals at properties.
The page top photo of blackened corrosion on an air conditioner cooling coil is from the U.S. CPSC warning to fire safety professionals.
Common Sources of Sulphur Gases & Odors in buildings: Causes of "Rotten Egg" Smells
Sulphur odors in buildings are described also as rotten egg smells or even flatulence smells that generally are associated with the presence of hydrogen sulfide (H2S) gas. To track down and cure the source of such odors review the list below. Information about the gas itself and links to hydrogen sulfide exposure limits and health effects are given separately at HYDROGEN SULFIDE GAS.
In sum, before blaming drywall for building odors, be sure that the smells are not from another detectable source such as sewer gases or a failing hot water tank anode - see ODORS, Smells, Gases in buildings-Diagnosis & Cure for details and see SMELL PATCH TEST to Track Down Odors. - DF We agree with the Florida state health department suggestion that reports of sulphur odors indoors are not a reliable indicator that Chinese drywall is present, because of a variety of reasons.
Readers should see ODORS, Smells, Gases in buildings-Diagnosis & Cure and also see our ODOR DIAGNOSIS CHECKLIST, PROCEDURE for a quick check that can help identify the source of smells in buildings and see SMELL PATCH TEST to Track Down Odors.
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Frequently Asked Questions (FAQs)
Question: sulphur stains on bathroom shower
Need to know if there is any product or natural way to remove or prevent stains from forming on the bathroom shower. - Anon 10/21/11
Try installing a water treatment system that removes sulphur from the water supply is the most effective and general solution to an odor or sulphur (sulfur) related stain issue. I've found that for light staining on fixtures household cleaners work fine; for difficult stains, products intended to remove iron staining often seem to work well on black sulphur stains as well.
Question: smell in justy one room affects my throat; A/C system circulates it to other rooms
Last summer and again this summer every time we run out certral air conditioning unit there is a smell that permeates only one room in the house. the room above the unit. it is not natural gas becasue PSEand G was here and tested using their detector and found nothing. The smell effcts my throat immediately. The system is cirulating the smell or is it causing the smell. Not everyone can smell it either, sometimes I smell it outside as well around the perimeter of the house, Please advise. Soould I call an air conditioning person or a plumber? - Anne Collins 7/7/2012
Anne I would start with a careful inspection of that section of ductwork feeding the room where you smell the odor as well as the ceiling or wall cavity wherein the duct is routed. Check for a water or plumbing leak, mold, dead animal keep us posted.
Question: sulfur smell from faucet
How do you stop sulfur smell from faucet that is furthest away from water source (well)? The other faucets do not have the smel - Twinlaker 8/24/12
Since the sulfur odor is not, by your account, in the water supply itself, just as you do, I suspect a more local source. If you are dead sure that the smell comes from the water, and not from the building, walls, cavities, etc., nor from a drain in that room, then I suspect bacterial contamination of the plumbing fixtures;
Try shocking the well and through that procedure, the plumbing system in the home. Make sure to let the chlorinated water sit in the piping and faucet overnight, preferably 24 hours.
Question: septic tank odor comes in my home
I have been gone all summer from Arizona and now I'm back how do I get the order to stop coming from the septic tank into my home. - Shirley 10/3/2012
It is not proper nor normal operation for a septic tank to stink. If the odor is coming into your home from outside, the best fix is to inspect and diagnose the problem with the septic tank or drainfield and fix that source. Start your diagnosis at SEPTIC SYSTEM ODORS.
Question: how do we pinpoint the source of a rotten egg odor which comes and goes daily
We have a rotten egg odor which comes and goes daily, It is quite strong in the living room, but we cannot pinpoint it.Can it be coming from the back boiler central heating. /we have also picked up the odor in a kitchen cupboard where the electricity meter is,could something with the wiring be causing it. My husband plumbed in a replacement sink about 6 months ago, and I complained about an odor. He fixed it, but could it be that.It's hard to detect the smell as we start to adjust to it. - Pamsie 10/26/2012
Pamsie, the odor you describe is most often traced to a sewer gas or bad plumbing vent problem - which makes me suspect that the replacement sink may not be properly vented. But it sounds as if you need help tracking down the odor to its source. We provide quite a few suggestions for how to pinpoint an odor source in a separate article titled ODOR DIAGNOSIS CHECKLIST, PROCEDURE.
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Technical Reviewers & References
Related Topics, found near the top of this page suggest articles closely related to this one.
U.S. Gypsum also provides information about its use of synethetic gypsum as follows: