Breastmilk question, please help!!!

I just thawed out 7oz of frozen breastmilk to give to my LO and it smells kind of like formula.

The first time I thawed some out it was only about 2oz and it smelled the same way and I was worried about giving it to her so I just threw it out. Now this is the second time I'm experiencing this. What could it be? Is it normal?

Please help!?!?!