5 Easy Ways To Stop Ass-Like Blender Bottle Smells Forever

blender bottle smellsWe’ve all experienced those dreaded blender bottle smells. You pull your shaker cup out of your gym bag after a tough workout, ready to mix up your post workout shake.

You’re a sweaty mess, and don’t smell too good yourself. Every bench you’ve been on looks like you’ve just took a leak over it. With that little bit of energy you have remaining, you unscrew your protein shaker lid to mix up your shake.

What hits though, is an overwhelming smell of ass. Like a fart in the face, opening a stinky protein shaker will pollute your eyes, nose and mouth with a disgusting foist. It’s enough to make you bork, throw up, and subsequently lose all your gains.

We’ve all been there. Mixed a protein shake up, and forgot to clean it. You might have give it a quick rinse, but failed to clean and dry it properly. This ultimately leads to a disgusting smelling shaker cup that will make you throw up your last meal in your mouth a little.

Why Does My Protein Shaker Stink?

When you mix up any protein supplement, either with water or milk, if left, it goes off. You’ll see that many protein powder brands will advise that a shake is consumed within 20 minutes of mixing. Some types of protein powder might even smell worst than others… im looking at you hydrolysed protein.

This is because over time the protein powder will “go off”. The ass-like smell that stinks out your blender bottle or protein shaker is actually bacteria.

If you don’t wash your shaker after you’ve had your protein drink, it’s going to smell really bad, really quick.

blender bottle stinks


Even if you wash your shaker cup, but not properly, and don’t dry it, then the remaining residue or drips of protein shake will be enough to cause protein shaker smells. This is what causes your ass like protein shaker stinks.

So if you’re wondering how to stop those ass-like blender bottle smells, then these 5 methods will turn your shaker from an ass-smelling machine, into a mass-packing machine.

1 –  Wash It After Every Use

That’s she said – right? I digress….

Sure we sometimes forget. We’re not all Rainman.

But if you find yourself drinking your protein shake, and not washing your shaker out of laziness, then change this habit now.


If you’ve gone out of your whey (pun intended) to actually order yourself some supplements, calculate your macros to ensure that you’re eating enough to build muscle, and bust your ass in the gym, then washing a shaker is no effort at all.

After you’ve had your protein shake, whether its in the gym or at home, put it under the hot tap. Fill it up, and rinse it out. Fill it back up, put the lid on and shake it.

Pour this water out, and rinse it out once more.

cleaning a protein shaker

2 – Dry It Thoroughly

It should go without saying, but a lot of people don’t do this.

Just washing it isn’t enough. The moist can make your blender bottle smell funky, especially if you leave the lid on.

Grab a tea towel and make sure that you get the bottom bone dry.

3 – Let It Steep In Vinegar Water

So the top 2 points have looked at preventing the smell.

Let’s assume you’re past the point of no return.

How do you get rid of that smell that is clogging up your shaker?

Pour some boiling water into a bowl. Add some vinegar.

Remove the lid from your protein shaker, and place both parts into the boiling water. Let it sit for an hour or so.

The water should smell all kinds of funky right about now. Remove your shaker cup from the bowl and voila. A stink-free shaker cup.

cleaning a blender bottle

4 – The Baking Soda Shake

Fill your shaker with warm-hot water. Add a teaspoon of baking soda, and then shake it up as you would a regular protein shake.

Warning… do not drink.

Pour this out, then give it a quick rinse. Fill it back up with hot water, and let it sit for an hour or so.

This should have got rid of that foul odor that was partying inside your shaker.

5 – Buy a New One

Ok so this one isn’t so much of a “method” as it is a suggestion. If your protein shaker stinks, you could always buy a new one.

Don’t be a mug and buy one from Tesco or Asda though, the damn things cost about £6 each. No thanks!

You can get them from any of the online supplement suppliers, and our discount codes quite often let you get a free shaker with your order. They’re pretty much the same, so it doesn’t matter if you get it from The protein works, GoNutrition, Myprotein or Sci-Mx.

Just get one from wherever you order your supplements from. At most you’ll pay £1.99 for one.

How Clean is Your Shaker?

So if you’re protein shaker smells like rotten ass, then follow any of the above tips to get it smelling like normal.

If it smells really, really bad…. then share your protein shaker horror story with me over on Twitter, Facebook or down in the comments below!


Adam Foster is an aspiring bodybuilder, and has been training since a teenager. As the founder of the website & youtube channel 'Shreddybrek' he shares his experiences and knowledge via informative videos and articles. Get in touch if you have any questions!

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