I get a smell of antifreeze when I put the outside

Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.

It also may be at the heater hose connection, sometimes the hoses will swell and the engine vibrations will cause it to crack over time. This is why it needs to be serviced and checked, if it starts leaking real badly it could blow the engine, If it stars leaking worse it could go all at once and you would not know it until you ruined the engine.

YOU HAVE A HEATER CORE LEAKING. CHECK THE PASSENGER SIDE FLOOR BOARD FOR COOLANT, AND PULL THE CARPET BACK TOO.

If you are experiencing coolant loss along with the odor, it is probably your heater core leaking.