Used old chicken broth in a stew, but washed it out. Will it be safe to eat?

I was making a beefstew, but didn't have any beef broth, so I used some chicken broth I had in the fridge. It smelled bad and thought it must be old. I rinsed the meat and potatoes.... 3 times. Do you think I washed out all the bad broth, or should I just toss it? It's in my slow cooker right now.