While it is generally not advisable to feed your pet human food, it is okay to feed them human food once in a while as a special treat. Try a new type of food/treat, a little at a time, to watch out for any allergies. However, if your pet does vomit, have diarrhea or develop skin allergies, stop feeding human food at once.
Often, your pet will crave and even enjoy a particular food (e.g. milk), but are actually not able to digest it properly. They end up having diarrhea and/or vomiting. Human food usually contains high levels of sugar and salt that are harmful for animals, and some ingredients may even be poisonous. Do your research and exercise caution when deciding to feed your pet human food.