If I wash a water bottle with bleach then rinse it out thoroughly with water + soap and it still smells like bleach, is there any bleach left in it? If so, how do I get rid of all of it?

First off, why the hell did you wash a water bottle out with bleach??

I think the bleach will evaporate eventually. Give it a few days and see.

Maybe try drying it in the sun.

Why would you do that

Buy a new water bottle now