General Maintenance & Repairs - Heater core

I think my heater core has gone out but not for sure. I was driving down the highway and smoke started coming in my vent it smelled somewhat like antifreeze. With the heat turned off I still get the smell but not as strong at all. Would this be the heater core or is there other things it may be. any help is much appreciated.

Sound like a heater core for sure. If you can get your hands on a pressure tester you can tell 100%. Could always disconnect it and see if it goes away.

Try checking the evap case drains to see what is coming out! Also, check the passenger side floorboard under the dash. GL