It can be different because dog’s have a stronger sense of smell than humans. Dogs have nostrils and lungs just like humans and other organisms.
Answer:
1. if you are making a meal and you don't properly tighten your jewellery, it might accidently fall into the food which is dangerous to the body because of the jewelry contains chemical substance, which could cause damage to the body , if not seen .
It also can be due to depression. people ends up having a hard time and they just don't know what else to do. they end up taking the wrong path and try to hide this pain