When it comes to gas fireplaces, the best way to protect your baby is by using a glass barrier. This will create a physical barrier between your baby and the flames, and will help to prevent any serious injuries. You should also make sure that the area around the fireplace is well-ventilated, as this will help to reduce the risk of carbon monoxide poisoning. Finally, you should have your gas fireplace regularly serviced and inspected to ensure that it is safe to use.