Is it okay to give my 2 year old milk when she is sick?

Maybe: Depending on the illness and the kids response, milk may be fine. The fat in milk make it linger in the stomach longer than other liquids and may produce nausea in some. Stomach viruses that produce vomiting are less tolerant to milk for a few days. However, some kids thrive on it and breast milk is tolerated well in most younger kids whatever the illness.