I drive a 2003 honda accord v6. This has just recently happened to me but when I drive and turn on my heater A rubber smell comes from my car in addition a little bit of white smoke comes out from the engine. When I drive with cold air or the ac on my car runs just fine. I have all the fluids in and everything seems to be fine until I turn on my heater. Please help.

 

Maybe coolant is leaking into the engine. Gasket issue is causing the leak into the engine.