Level 1: Symptoms and treatment methods of infants choking on milk 1. Symptoms of infants choking on milk When a baby chokes on milk, the following symptoms will appear: 1. Shortness of breath. 2. There is a foreign body sensation in the throat, and you may sneeze or feel like vomiting. 3. The complexion becomes red or purple. 4. Make a cry, but the voice is hoarse. 2. Treatment method 1. Let the baby stay quiet first and don’t panic.