Excited about fireworks?

Quick back story about Chance Anne- Adopted from shelter at about 6 months old. Red Heeler Curr mix is her breed. Never been used for anything except family pet. She is currently 8-9 yrs (current yr 2019) old and this happens every year.

Any time its firework season she tries to eat them! She barks and yipes and whines BUT she wants to run at them and eat them. (first hand experience, almost turned into a shitty fourth of July...) I have held them in my hand unlit and she's tried to eat them too. Why is she doing this?