Soft Rubber

How do you get certain food-tastes out of soft rubber?

I have an acrylic water bottle with a plastic straw (inside) and a bendable rubber straw piece that I use to drink out of. Kind of like the same idea as those camel pack straws too. It’s just thick bendable, soft rubber.
However, it tastes like various things. Soap, crystal light, etc. So how the heck can I get it to taste like “nothing” again?

Maybe soak it in bleach water then rinse it out really well? That’s all I can think of. If that don’t work, try making a paste out of baking soda and water and cleaning it out with that. Baking soda is supposed to absorb odors from the fridge, so maybe it’ll work on getting taste out of plastic, LOL

LG Optimus S Silicone Case Soft Rubber Case Overview / Review By AccessoryGeeks.com