What would cause a burning/antifreeze smell,heater blowing cold&engine going dead

What is your question?

I smelled a faint antifreeze smell a few day's ago. Then the heater stopped working soon after. The heater only blows cold air now. This morning's temp. was 17°&I smelled a burning smell&the car went dead when I tried to drive it.

What makes this problem better or worse?

Cold temperature

How long has your 1999 Ford Contour had this problem?

A few week's