* Coolant leak: Check for leaks in the coolant system, such as a damaged radiator, water pump, or hose. Look for puddles of coolant under your car or check the coolant level in the reservoir. If the level is low, you may have a leak.
* Overheating: If your engine is overheating, it can cause the coolant to boil and create a sweet, pungent odor. Check the temperature gauge on your dashboard and make sure it's not in the red zone.
* Faulty heater core: The heater core is a small radiator located inside your car that heats the air that comes out of the vents. If the heater core is damaged or leaking, it can cause a sweet antifreeze smell in the cabin of your car.
* Blown head gasket: A blown head gasket is a serious problem that can cause a variety of symptoms, including an antifreeze smell, overheating, and loss of power. If you suspect a blown head gasket, have your car inspected by a professional mechanic as soon as possible.
If you're not sure what's causing the antifreeze smell, it's best to have your car inspected by a qualified mechanic.