Final answer:
The best home treatment for acute spasmodic laryngitis in a 3-year-old is using a cool-mist humidifier to help ease breathing by thinning mucus. Honey should be avoided in children under one year, and cough syrups are not recommended for productive coughs.
Step-by-step explanation:
When handling another attack of acute spasmodic laryngitis at home, it is recommended to place the 3-year-old boy near a cool-mist humidifier. Using a humidifier can help loosen and thin mucus in the respiratory system, making it easier to breathe. While honey is sometimes used as a treatment for cough, it should not be used in children less than one year old due to the risk of infantile botulism. Additionally, over-the-counter cough syrups and cough suppressants are not generally recommended in cases where the cough is productive, as expelling mucus is important for recovery. If the child's condition seems severe or doesn't improve, seeking emergency medical attention might be necessary.