If your home has a musty odor or a change in flooring near sinks, toilets, garbage disposer or other fixture, it could indicate hidden water damage. Air fresheners can cover up the odor, but a moisture check can help determine the cause.
Bacteria can grow in the damp and dark of the sink drain. Although using the disposal and cleaning regularly can help to prevent bacteria from accumulating, if the smell stubbornly persists, it is time to search for the source.
Bacteria
When the odor of musty mildew is present in your kitchen, it’s likely caused by bacteria. Damp areas are also ideal for bacteria growth, under sinks are dark and they grow easily. This can lead to odours which can render even the most delicious food inedible.
A musty smelling sink can also be a sign that there is a continuing water issue in the area. When water gets under sinks, it can be due to a leak in the plumbing or other type of water damage and can create mold, mildew and rot. The first step to determining the source of a musty smell is to find and repair any sources of moisture.
Another reason for foul sink odor could be a drain pipe or pipe that has some food particles built up in the pipe.
This could be because you use your sink to prepare food or just because you wash dishes in the sink, you can also get it from using a garbage disposal that doesn’t really break food down. A simple cleaning with baking soda and vinegar can usually clear up this problem.
Along with a foul odor from the sink you might also notice that your dish water is tasting bad and discolored, or that there are stains on your dishes. May indicate high level of sulfate in water supply. Sulfate can be reduced to normal levels by a plumber using water treatment.
Clogged sewer line is another reason for smelly kitchen sinks. This can pose a serious health and safety issue and can also cause unpleasant odours in the kitchen. When you think this is the reason of your odorous sink, you need to call a specialist plumber for guidance and help.
A smelly kitchen or bathroom easily can be attributed to a stack of half-used cleaning bottles and an old sponge floating around under the kitchen and bathroom sink.
These can be an contributing factor, but these are not the main reason for most musty odors as it is due to an underlying moisture problem that is leading to the growth of mold or mildew.
Typically the odour will not be removed by drying the mould, but if you can remove the moisture problem then you will remove the odour as well.
Hidden Plumbing Leaks
If a persistent musty smell persists in the kitchen after cleaning and regular maintenance, it could be caused by hidden plumbing leaks. Leaks can cause a perfect breeding ground for molds and mildew to grow – particularly when organic material is involved, such as garbage disposals or sink drains.
The dark, damp environment under sinks makes them perfect spots for molds and fungus to grow. Very often these noxious odors come from food particles, grease, and bacterial action inside the drain.
With non toxic and safe cleaning agents, the odors can be removed but to prevent their reoccurrence, the cause of the moisture must also be taken care of.
If water is leaking under sink cabinets it can lead to water loss and damage walls, carpet, cabinets and wood flooring. It also can cause damage to insulation and drywall, cause excess moisture and negatively affect indoor air quality.
Even a small leak can easily go unnoticed until it is too late, or many homeowners will not see the effects of the leak unless it is a pretty darn big leak.
Check for stains and streaks on the ceiling or wall below sink cabinets for any sort of water leakage. Be sure to look for any water marks that may be in a circular pattern or appear to be moving towards the sink. These may indicate that a pipe has moved and is leaking.
Leaky sink drains can be a major issue, particularly if the leaks are obstructed by hair, soap scum, and any other organic material that can seize up an odor.
Avoid these problems with regular cleaning of the drain and frequent use of the garbage disposal. If the vent is blocked or not installed properly, sewer gas can accumulate around the sink, and cause unpleasant odors in more serious cases.
Professional sewer inspection and repair services will aid in the removal of these odors, while simultaneously safeguarding the home’s plumbing system.
Sulfates in the water may mean trouble, if your garbage disposal has a strong, musty smell. Your plumber can perform a water treatment to reduce the sulfate level and get rid of the stench.
Mold and Mildew
Mold or mildew can be grown under sinks and drains from the dark and damp areas. They multiply and emit odors as they feed on food particles that are drawn down drain lines from sink waste, from garbage disposals and dishwasher supply lines, in clogged pipes.
Floating mold spores can be a sign of serious health issues such as mold-related asthma and as spores fly through the air, they can cause respiratory issues in some individuals.
The first sign of a hidden leak that may have been building over weeks or months is likely a musty smell. This is because water can penetrate and slowly infiltrate items that may not be visibly damaged, such as the backside of drywall or insulation, wood framing behind the walls, the bottom of a stud cavity and your vapor barrier in the slab floor.
Mold can begin to thrive in such materials in 24 to 48 hours after water penetrates and becomes visible as a symptom of a leak.
Some homeowners’ misconception is that they can see a leak on the surface of the floor or wall. In some circumstances, this may be the case for a plumbing issue, but most leaks are in the hidden areas under/around the cabinets, in the wall cavities and between a floor and subfloor.
This is why it is sometimes not sufficient to simply have a visual inspection and a professional water and mold remediation company is required.
It can be hard to detect the musty odors of a smelly sink cabinet, if no water or fungus is visible. This is because there are a myriad of contributors to a musty smell such as organic matter, wet building materials, high humidity and condensation.
Without taking care of these other factors, a musty smell can remain in the home even after all visible parts of the home is treated. That is why a comprehensive water and mold remediation effort is imperative and involves moisture mapping, dehumidification, continuous monitoring and clearance air testing.
Generally, this service will consist of a team of professionals who are knowledgeable in specialized tools that can reach tight spaces and hidden corners that may be part of your case.
Wetness Under the Sink in the Kitchen
Your sink drain holds food particles and smelly bacteria in a dark moist place. This can produce a bad odor particularly if the drain is slow to drain. Odour-absorbing kitchen sink drain cleaners and natural home remedies can help dissolve buildup and odour in sink drains.
One of the easiest ways to clean the kitchen drain is to flush the drain periodically with hot water after draining it. Drano kitchen granules can also be used to prevent grease buildup in sink pipes and can be used in a tablespoon amount.
You can use baking soda to freshen up your kitchen sink and eliminate odors by pouring it down the drain once or twice a week.
If these DIY methods don’t seem to help with the odor, you may have a more serious plumbing problem. The best way to deal with the issue is to determine the source of the odor and immediately contact a plumber to prevent mold or mildew from affecting the cabinets or the food.
Most bad smelling kitchen sink odors are associated with the drain or the P-Trap, the U shaped portion underneath your sink drain. The slip nuts can loosen over time so it leaves a hairline gap that can leak when the sink drains.
Sometimes you can solve this issue with a wrench or by drying the paper towel, but if that doesn’t seem to be fixing it, the only option you may have is to hire a plumber who will replace the drain setup of your sink.
Any leaks found in the p-trap may let the sewer gasses escape through your drain and cause an unpleasant smell. Another culprit for smelly kitchen sinks is a clogged sewer vent. If you find your kitchen sink drain and p-trap are in good shape, but you’re still getting a whiff of musty odor, run some boiling water down the drain and flush the system.
When a garbage disposal becomes clogged, it can emit unpleasant smells because of the dark, damp space within the garbage disposal’s grind chamber. For garbage disposals that smell, use a natural drain cleaner using baking soda and vinegar.
Citrus fruit rinds, such as lemon or orange peels, can also be put in the rubbish disposal, to refresh the rubbish disposal and get rid of odours. You can install a professional grade odor eliminator (like InSinkErator’s LEDefense) in your garbage disposal and it will continuously eliminate bacteria and odor in the grind chamber.