Why Does Your Blender Smell Funny? (The Culprits and Solutions)

Why does your blender smell funny? This is a question that many blender owners may ask themselves when they notice an unpleasant odor emanating from their appliance.

While blenders are essential for making smoothies, sauces, and other delicious treats, they can also be a source of musty smells and other unpleasant odors.

In this article, we will explore the reasons why your blender may smell funny and provide tips on how to keep it smelling fresh and clean.

Key Takeaways

  • Bacterial growth and motor heating are two common causes of blender odor.
  • To prevent blender odor, clean your blender after each use and let it dry completely.
  • To clean a smelly blender, use a mixture of warm water, dishwashing liquid, and lemon juice, or try blending a mixture of baking soda and water. If the odor persists, it may be time to replace your blender.

THREE Common Causes of Blender Odor

If you’ve noticed a funky smell coming from your blender, you’re not alone. There are several common causes of blender odor that you should be aware of.

1. Overheating and Motor Issues

One of the most common causes of a burning smell coming from your blender is overheating. This can happen if you’re blending something too thick, like frozen fruit or ice, or if you’re blending for too long. When the motor overheats, it can produce a burning smell, and in some cases, it can even burn out the motor.

If you’re noticing a burning smell coming from your blender, turn it off immediately and unplug it. Let it cool down for a few minutes before attempting to use it again. If the burning smell persists, it may be time to replace your blender.

2. Food Residue and Bacterial Growth

Another common cause of blender odor is food residue and bacterial growth. When you blend foods like garlic, onion, or raw eggs, the blender can retain their strong odors. Over time, the combination of these various foods can cause the blender to develop a funky smell.

Bacterial growth can also contribute to blender odor. Bacteria can produce smelly chemical compounds like hydrogen sulfide, ammonia, and methyl mercaptan. These compounds cause the unpleasant smells you associate with rotten food and sewage. When these bacteria get into your blender, they can start to multiply.

To prevent food residue and bacterial growth, make sure to clean your blender thoroughly after each use. Use warm, soapy water and a scrub brush to clean the blades and the interior of the blender. You can also add a drop of dishwashing liquid and a coarsely chopped lemon to the blender and let it run for a minute to help remove any odors.

3. Issues with Blender Parts

Finally, issues with blender parts can also contribute to blender odor.

If your blender is made with BPA plastic, it can release microbial volatile organic compounds (VOCs) that can contribute to a funky smell. Additionally, if the blender gasket or seals are worn or damaged, food particles can get trapped in the blender and contribute to odor.

To prevent issues with blender parts, make sure to inspect your blender regularly for any signs of wear or damage. If you notice any issues, replace the affected parts immediately.

By being aware of these common causes of blender odor, you can take steps to prevent it from happening in the first place. Keep your blender clean, use it properly, and replace any damaged parts as needed to keep it smelling fresh and working properly.

Two Ways To Prevent Blender Odor

If you’re experiencing a funky smell coming from your blender, don’t worry, you’re not alone. Blender odor is a common issue that many people face, but it can be easily prevented with proper blender use and routine maintenance.

1. Proper Blender Use

One of the most important things you can do to prevent blender odor is to use your blender properly. Here are some tips to keep in mind:

  • Don’t overfill your blender. Overfilling can cause excess pressure and strain on the blender’s motor, which can lead to overheating and burning smells.
  • Use enough liquid when blending. If you’re blending dry ingredients, make sure to add enough liquid to prevent the blender from overheating and burning out.
  • Avoid blending ice for extended periods of time. The heat generated from blending ice for too long can cause the blender to overheat and emit a burning smell.

2. Routine Blender Maintenance

In addition to proper use, routine maintenance is also key to preventing blender odor. Here are some maintenance tips to keep in mind:

  • Clean your blender after each use. Food and liquid particles can get stuck in the blender and cause odor over time. To clean your blender, disassemble the jar and wash it thoroughly with warm water and soap.
  • Check and replace worn out parts. Over time, the seals, gaskets, and bearings in your blender can wear out and cause odor. Check these parts regularly and replace them as needed.
  • Lubricate your blender as needed. Excess lubricant can cause odor, so make sure to only use the recommended amount. If your blender is not working properly, it may need lubrication or repair.

Here’s a table of common causes and solutions for blender odor:

Food and liquid particles trapped in blenderClean blender thoroughly after each use
Worn out seals, gaskets, or bearingsCheck and replace worn out parts
Excess lubricantUse recommended amount of lubricant
Overheating from overfilling or blending ice for too longDon’t overfill blender and avoid blending ice for extended periods of time

By following these tips and maintaining your blender properly, you can prevent odor and keep your blender in top condition. If you’re still experiencing issues, check your blender’s warranty or consider taking it in for repair.

Cleaning a Smelly Blender

If you’re noticing an unpleasant odor coming from your blender, it’s time to give it a good cleaning. Luckily, there are many household ingredients and deep cleaning techniques that can help get rid of the smell.

Using Household Ingredients

One of the easiest ways to clean your blender is by using household ingredients. Here are some options:

VinegarFill the blender with equal parts water and white vinegar. Let it sit for a few minutes, then blend for a minute. Rinse thoroughly with hot water.
Baking sodaSprinkle baking soda in the blender, then add hot water. Let it sit for a few minutes, then blend for a minute. Rinse thoroughly with hot water.
LemonFill the blender with hot water and a few slices of lemon. Let it sit for a few minutes, then blend for a minute. Rinse thoroughly with hot water.

Deep Cleaning Techniques

If the odor persists, it may be time for a deep cleaning. Here are some techniques to try:

  • Disassemble the blender and clean all parts thoroughly with dish soap and hot water. Pay special attention to the gaskets, which can trap food particles and cause odors.
  • Soak the blender jar and blades in a mixture of hot water and bleach for a few hours. Rinse thoroughly with hot water.
  • If the odor is caused by friction, try lubricating the blender’s moving parts with a food-safe lubricant.

Remember to always consult your blender’s manual for specific cleaning instructions and to avoid damaging the blender. With these tips, you can say goodbye to that funny smell and get back to blending your favorite foods and drinks.

When to Replace Your Blender

Even with proper maintenance, blenders will eventually wear out and need to be replaced. Here are a few signs that it might be time to start shopping for a new blender:

Signs it’s Time to Replace Your Blender
Blade assembly is damaged or dull
Bearings are worn
Motor brushes are worn
Electrical smell when in use
Seals are torn or leaking
Excessive bacteria growth
Blender struggles to blend onions or other tough ingredients
Blender is an older model

If the blade assembly is damaged or dull, it won’t be able to effectively blend ingredients. Similarly, if the bearings are worn, the blender will likely make a loud noise and vibrate excessively. If the motor brushes are worn, the blender will have a hard time starting or may not turn on at all.

If you notice an electrical smell when using your blender, it could be a sign of a more serious problem with the motor. It’s best to stop using the blender immediately and have it inspected by a professional.

Torn seals can cause leaks and make a mess during blending. Additionally, if there is excessive bacteria growth in your blender, it can be difficult to fully clean and sanitize. This can lead to health concerns and a need for replacement.

If your blender struggles to blend onions or other tough ingredients, it may be a sign that the motor is losing power and needs to be replaced. Finally, if your blender is an older model, it may be time to upgrade to a newer, more efficient model.

Overall, if you notice any of these signs, it’s best to start shopping for a new blender to ensure you can continue to make your favorite smoothies and recipes without any issues.


In conclusion, a smelly blender is a common problem that can be easily resolved with proper cleaning and maintenance. By following the troubleshooting tips outlined in this article, you can prevent unpleasant odors from developing in your blender and ensure that it continues to operate smoothly and efficiently.

To recap, some of the main reasons why your blender may start to smell include food trapped inside, overheating motor, and mold growth. To prevent these issues, it’s important to clean your blender regularly and store it in a dry, well-ventilated area.

When cleaning your blender, make sure to disassemble it and clean each part thoroughly. Use warm soapy water and a soft brush to remove any food particles or debris that may be stuck in the blades or other crevices. You can also use a mixture of water and vinegar or lemon juice to help remove any stubborn stains or odors.

In addition to cleaning, it’s also important to use your blender properly to prevent overheating and other issues. Make sure to never overload it with too much food, and always start with low speed settings before gradually increasing to higher speeds.

By taking these simple steps, you can keep your blender smelling fresh and clean, and ensure that it continues to work properly for years to come.

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