To get rid of a bad dishwasher smell, tackle the most likely culprits—trapped food, mold, or soap scum—using a 5-step deep cleaning process.
A dishwasher typically smells bad when first turned on because the appliance is pushing the previous cycle's leftover, stagnant water down the drain while the newly introduced hot water heats up and releases trapped, decaying food particles.
To quickly eliminate that stubborn, sulfur-like egg smell, manually scrub the filter and spray arms to remove trapped food, then run an empty, hot cycle with a bowl of white vinegar.
A dishwasher smell bad isn't just annoying. It could also be a health hazard. That unpleasant smell often comes from mould, mildew, and bacteria like E. coli and Salmonella.
To get rid of a bad dishwasher smell, tackle the most likely culprits—trapped food, mold, or soap scum—using a 5-step deep cleaning process.
The vinegar and added baking soda cycles can pay dividends in removing remaining residue left in the dishwasher by food waste. Baking soda's property as a deodorizer may also be beneficial if your dishwasher has been giving off an unwelcome musty stench.
A sewage smell in your dishwasher usually points to trapped food, grease buildup, or a drainage issue rather than a true plumbing backup. The leading causes and actionable solutions to eliminate the odor include:
Pour 2 cups of white vinegar in a dishwasher-safe bowl and place the bowl on the bottom rack of your empty dishwasher. Select a dishwasher cycle with an air-dry or energy-saving dry option and press start. During the cycle, the vinegar will mix with the wash water to help neutralize odors and clean your dishwasher.
A strong sulfur smell under the hood is often the battery. Test your fuel system. If it's an over-rich fuel mixture to blame, it can appear like a bad catalytic converter. However, testing your fuel pressure and looking at the spark plugs to look for excessive fuel can help identify this.
Yes, a moldy dishwasher can absolutely make you sick. Because dishwashers are warm, damp, and full of food debris, they are prime breeding grounds for fungi and bacteria. Exposure to this mold can cause a variety of health issues.
Cleaning your dishwasher with vinegar and baking soda is an easy way to help eliminate odors, grime and buildup without heavy scrubbing. Start with an empty dishwasher, then clean out the filter and run separate cycles with vinegar, followed by baking soda (never both at the same time), to help freshen the interior.
To remove the rotten egg odor without chlorine, several options work well. Activated carbon filters remove hydrogen sulfide gas and improve taste and smell. Manganese greensand filters convert hydrogen sulfide into insoluble sulfur, which is filtered out.
A rotten egg smell usually indicates trapped food particles or sulfur bacteria in the drain or filter. Remove the filter, clean it thoroughly, and check the drain for clogs. Running a hot cycle with vinegar afterward can help flush away any lingering odor.
Low-Temperature Dishwashers (Chemical-Based)
The surface temperature of the dish should reach at least 160°F (71 °C) for proper sanitization. Avoid exceeding 194°F (90°C), as water vapor reduces the effectiveness.
The average lifespan of a dishwasher is 9 to 12 years. However, premium brands properly maintained can last up to 15 years, while heavy use or hard water can cause models to break down in 7 to 8 years.
To get rid of a bad dishwasher smell, tackle the most likely culprits—trapped food, mold, or soap scum—using a 5-step deep cleaning process.
Yes, you can use vinegar in your dishwasher, but how you use it matters. It is highly effective for cleaning and deodorizing your machine, but because vinegar is highly acidic, using it improperly can damage rubber seals and hoses over time.
To quickly deodorize your dishwasher, place a dishwasher-safe bowl filled with 1 cup of white vinegar on the top rack of an empty machine and run a hot water cycle. Follow it by sprinkling a cup of baking soda across the bottom and running a short, hot rinse cycle.
A new dishwasher smell is usually caused by the "off-gassing" of new internal plastic parts, rubber door seals, or exterior bitumen insulation heating up for the first time. It can also be caused by manufacturing oils or a stagnant plumbing trap if the drain hose wasn't installed correctly.
Reason: If your washing machine smells like a sewer — with a sulfur and/or human waste odor — it has one of two problems. Either your machine has bacteria that are releasing hydrogen sulfide gas, or you have a plumbing issue causing sewer gas to enter the laundry room.
Drano can work well if your drain smells bad due to minor clogs. If food, grease, or soap buildup is causing slow drainage and mild odors, it may clear things up. However, if the issue is sewer-related or due to bacteria, it won't be much help.
To sanitize your dishwasher, remove the bottom rack, clean the filter of food debris, and run an empty, hot cycle with 1–2 cups of white vinegar in a dishwasher-safe container on the top rack. For deep sanitizing, run a second, short hot cycle with 1 cup of baking soda sprinkled at the bottom.
When cleaning your dishwasher, place the bowl of vinegar on the top rack. Put 1 to 2 cups of distilled white vinegar into a dishwasher-safe container and run a hot water cycle (without detergent or dishes). This slowly disperses the vinegar throughout the wash to cut through grease, eliminate odors, and break down mineral buildup.
You should not put vinegar and baking soda in your washing machine at the exact same time for a regular laundry load. Because vinegar is an acid and baking soda is a base, they immediately neutralize each other, rendering both ineffective at cleaning or softening.