It's inevitable that your shaker bottle will begin to stink, especially after you left your partially used protein shake in your car on a hot summer day.
CANT GET RID OF THE STENCH? TRY THIS
Step 1) Start with washing your shaker bottle with soap and water
Step 2) Add 1 Tbsp of Baking Soda
Step 3) Add about 1/4 cup of Distilled White Vinegar
Step 4) Fill up the rest of your cup with tap water
Step 4) Screw on the top with the cap slightly opened and shake it up to ensure your concoction gets into all the nooks and crannies (do this over the sink, it will foam)
Step 5) Let sit for an hour and wash out with soap and water
If you live in a humid place like us (Hawaii), store your shaker bottle with newspaper stuffed inside to absorb and moisture and prevent any bacteria growth.