ANY DOG OWNER !

So I have a dog

It’s not mine but my sister. I treat him like a family dog than the dog just being hers.

Im panicking and want to cry but I don’t know what happening to my dog. He was okay in the morning when I came back from work but then when I woke up from my sleep the house just became flooded with negative vibe. My dog is weeping but "no one" knows why . He look scare and fright breathing heavily. He has his body against the corner of my house front door. Won’t let me touch him. He loves my brother and this time he ignore him and he just kept trying to find a place to hide. Sister took him out and later on dad took him out . He didn’t want to walk much which that’s never him he like walking. Right now my sister checking on him. Not long ago my sister got my mom to tell her what actually happened. My mom said that she gave him a bowl of cooked chicken broth with onion pepper and garlic .. I don’t know what else she put because she not saying much. No one in this house say much like I hate that. So I don’t know if it’s the food that cause him act like this but I’m scared because I don’t want to lose him I love him.