Antifreeze everywhere

There is a leak, possibly one of the hose clamps are not tight, and the antifreeze is being sprayed by the fan across the engine. It probably doesn't happen until the engine is warmed up, the thermostat opens, the antifreeze starts to circulate, and the cooling system builds up pressure. Check your hose connections to see if one is not tight while the engine is cold, being particular to the big hose on the top of the radiator over the fan. If you can't find the leak, start your car with the hood open and watch closely from the side of the car to try to find where it is leaking from. It may take a few minutes until the pressure builds up enough to cause the leak.