Just like outdoor grilling, indoor grilling requires attention from the cook. Don't walk away from the grill. Remember you are indoors now; all the smoke made from a fire or burning food isn't going to get carried away on the wind. To reduce fat and to reduce the smoke generated by your indoor grill trim excess fats from meats. The less fat the less burning, smoke and of course, the less fat in you. Some open grills can let fat drippings get to heating elements. This can cause a fire, though the risk is very small. Keep a fire extinguisher in your kitchen. I don't say that because indoor grilling is dangerous. I say that because you should have a fire extinguisher in your kitchen. It is also a good idea to use your grill near a kitchen vent of window. You never know.