Should I just let puppy eat feces if she gets aggressive when removed from it?

Here's a good article:

https://www.akc.org/expert-advice/healt…

I was going to suggest either spraying it with something that tastes bad, like that bitter apple stuff, or tossing a good treat to lure the dog away so you can pick it up and dispose of it. While I don't have specific experience with this problem, the only way I can get my dog to give up the bone he is chewing on is to toss a treat in another direction.

You need to train y our dog properly or hire a certified trainer. If you are scared of a 5 month old puppy, you're gonna have a real problem when the puppy grows up. Hire a trainer asap to teach YOU how to train your puppy and how to be a good owner.