Old food bits and moisture cause the smell – why do blenders smell is a common question with a simple answer. The gasket, blade, and jar base trap tiny food particles that start to rot and stink over time.
You use your blender for smoothies and sauces. Then one day, you open it and get hit with a nasty odor. It’s a problem we all face at some point.
I’ve tested dozens of blenders over the years. The smell always comes back to a few key spots people miss when cleaning.
This guide will show you why it happens and how to stop it for good. Let’s get your blender smelling fresh again.
The Main Reasons Your Blender Stinks
So, why do blenders smell in the first place? It’s not just one thing. A few parts work together to create that bad odor.
The rubber gasket under the blade is the biggest culprit. Food and liquid get pushed into this tiny space during blending. It’s hard to clean and stays damp.
The blade assembly itself traps food. Even after rinsing, tiny bits stick between the blades. They rot and make your whole kitchen smell bad.
The base of the jar can also hold moisture. If you put the lid on while it’s still wet, mold can grow. This is a common mistake I see all the time.
Using the blender for strong-smelling foods makes it worse. Garlic, onions, and fish oils leave behind powerful odors. These smells soak into the plastic over many uses.
Finally, not cleaning it right away is a problem. Letting food sit for hours gives bacteria time to grow. The smell sets in and gets much harder to remove.
How to Find the Source of the Smell
First, you need to play detective. Find exactly where the smell is coming from before you try to clean it.
Take your blender apart completely. Remove the blade from the jar. Take off the rubber gasket if your model has one. Look at each piece separately.
Smell the jar by itself. Does it have an odor? Then smell the blade assembly. Pay close attention to the area where the blade meets the base.
Check the rubber gasket carefully. This little ring often hides the worst smells. Look for visible gunk or discoloration in the grooves.
Don’t forget the lid. The sealing ring on the underside can trap smells too. Pop it out and give it a good sniff test.
Once you know which part smells worst, you can focus your cleaning there. This saves you time and effort in the long run.
Step-by-Step Deep Cleaning Method
Now let’s get rid of that smell for good. Follow these steps to clean every part of your blender.
Fill the jar halfway with warm water. Add a few drops of dish soap. Put the lid on and blend for 30 seconds. This cleans the jar and blades at the same time.
Take the blender apart after this initial clean. Use an old toothbrush to scrub the blade assembly. Get into all the tiny spaces between the blades.
Clean the rubber gasket with the toothbrush too. Use a bit of baking soda paste for tough smells. The baking soda will help deodorize the rubber.
For the jar, make a paste with baking soda and water. Scrub the inside, especially the bottom. Let it sit for 10 minutes before rinsing.
According to USDA Food Safety, proper cleaning stops bacteria growth. This is key for stopping smells before they start.
Dry every part completely before putting it back together. Use a clean towel or let it air dry upside down. Moisture is the enemy here.
Using Baking Soda to Remove Odors
Baking soda is your best friend for blender smells. It’s a natural deodorizer that works really well.
Make a thick paste with baking soda and water. Spread it on the smelly parts of your blender. Let it sit for at least an hour.
For the jar, you can use dry baking soda too. Put a few tablespoons in the empty jar. Add warm water and blend for a minute.
The baking soda will pull odors out of the plastic. It’s much better than just using soap alone. Soap cleans but doesn’t always remove smells.
Rinse everything well after using baking soda. You don’t want baking soda taste in your next smoothie. A quick vinegar rinse can help remove any residue.
I use this method once a month on my blender. It keeps it smelling fresh between regular cleanings. It’s cheap and works every time.
Vinegar Solution for Tough Smells
When baking soda isn’t enough, vinegar is your next step. The acid in vinegar breaks down stubborn odors.
Mix equal parts white vinegar and water in your blender jar. Blend for about 30 seconds. Let this solution sit in the jar for 15 minutes.
Take the blender apart and soak the pieces in vinegar water. Pay special attention to the rubber gasket. It soaks up vinegar well to kill odor-causing bacteria.
The CDC notes vinegar is a good cleaning agent. It’s safe and doesn’t leave harmful chemicals behind.
Rinse everything very well after using vinegar. The smell of vinegar will fade as it dries. Your blender won’t taste like vinegar later.
For really bad smells, use baking soda and vinegar together. The chemical reaction helps lift odors from deep in the plastic.
Preventing Future Blender Smells
Stopping the smell is great. But keeping it from coming back is even better. Here’s how to prevent future odors.
Always clean your blender right after using it. Don’t let food sit in the jar for hours. This is the number one rule for smell prevention.
Take the blender apart when you clean it. Don’t just rinse the jar with the blade still attached. Food hides in places you can’t see.
Dry every piece completely before storing. I leave my blender jar upside down on a towel. This lets air circulate and prevents moisture buildup.
Store the blender with the lid off. This allows any remaining moisture to evaporate. A closed, damp environment is perfect for mold growth.
Clean the gasket regularly, even if it doesn’t look dirty. Food particles build up slowly over time. A monthly deep clean keeps smells away.
Common Mistakes That Make Smells Worse
Many people make simple mistakes that cause blender smells. Avoiding these will help keep your blender fresh.
Putting the lid on a wet jar is a big mistake. Trapped moisture has nowhere to go. It creates the perfect home for smelly bacteria.
Not cleaning the blade assembly properly is another error. Just rinsing the jar isn’t enough. You need to get between those blades.
Using the dishwasher for blender parts can cause problems. The high heat can warp plastic and rubber. This creates new places for food to hide.
Ignoring the rubber gasket is probably the most common mistake. This little piece causes most blender odors. Yet people rarely clean it properly.
Storing the blender assembled is also problematic. Air can’t circulate when all the pieces are together. This traps moisture and odors inside.
When to Replace Blender Parts
Sometimes cleaning isn’t enough. If the smell won’t go away, you might need new parts.
Check your rubber gasket first. If it’s cracked or warped, replace it. Damaged gaskets can’t be cleaned properly anymore.
Look at the blade assembly. Are the blades dull or rusty? Rust can cause metallic smells that won’t come out.
Examine the plastic jar for scratches or cloudiness. Deep scratches trap food and bacteria. A cloudy appearance can mean the plastic is breaking down.
Contact the blender manufacturer for replacement parts. Many companies sell individual pieces. This is cheaper than buying a whole new blender.
The FDA recommends replacing worn kitchen tools. Damaged parts can harbor harmful bacteria beyond just causing smells.
Natural vs. Chemical Cleaners
You have choices when cleaning your blender. Both natural and chemical cleaners have their place.
Baking soda and vinegar are great natural options. They’re safe, cheap, and work well for most odors. I use these for regular maintenance cleaning.
For really tough smells, you might need something stronger. Oxygen-based cleaners can help with set-in odors. Follow the instructions carefully.
Bleach solutions work but require caution. Mix one tablespoon of bleach with one gallon of water. Soak the parts for no more than one minute.
Rinse bleach-treated parts very thoroughly. You don’t want any bleach residue in your food. I only use bleach as a last resort.
Dishwasher pods can work for some blender parts. Check your manual first. Some materials can’t handle the heat or chemicals.
Frequently Asked Questions
Why do blenders smell like rotten eggs?
This usually means food is rotting in the gasket or blade area. Protein-rich foods like dairy or eggs leave behind sulfur smells when they spoil.
Why do blenders smell after washing?
If it still smells after washing, you missed a spot. The rubber gasket or blade area likely still has food particles. Take it apart and clean each piece separately.
Why do blenders smell like burning?
A burning smell means the motor might be overheating. Check for food jamming the blades. Make sure you’re not overloading the blender with thick mixtures.
Why do blenders smell like plastic?
New blenders often have a plastic smell. It should fade after a few uses and cleanings. If it persists, the plastic might be low quality or breaking down.
Why do blenders smell like garlic?
Garlic oils stick to plastic and rubber. They’re hard to remove with just soap. Use baking soda or vinegar to break down these strong oils.
Why do blenders smell moldy?
Moldy smells mean moisture is trapped somewhere. You’re probably putting the lid on while the jar is still wet. Always dry completely before storing.
Conclusion
So why do blenders smell? Now you know all the reasons and solutions. It comes down to food particles, moisture, and missed cleaning spots.
Regular, thorough cleaning is your best defense. Take the blender apart, clean each piece, and dry everything completely. Do this right after each use.
For existing smells, baking soda and vinegar work wonders. They’re natural, safe, and effective. Use them monthly to keep odors away for good.
Remember that prevention is easier than cure. A quick clean after each use takes less time than a deep clean later. Your nose will thank you.
According to EPA, keeping kitchen tools clean improves home health. A fresh-smelling blender is part of a healthy kitchen. Now go make a smoothie without the stink.