smoke from vents.
 

so i am getting smoke from my vents, and that sweet smell. i do know about the heater core as being a culprit but i am also getting coolant dripping from the frame behind the passenger side wheel. im not getting any fluid dripping on the floor boards inside so i am wondering if there is a leak from some other hose. as far as i can see the only thing that receives any coolant to the cab is the heater core. could there be any other hoses that could be leaking coolant?

Heater core, no doubt.

Also make sure that the condensation tube (which is located in the area you're seeing the drip) is not partially plugged.

What he said, your heater core is done.

HEATER CORE, BEEN THERE DONE THAT, pull the dash man, clean the case out, and theres a secret bolt under the blower motor resistor.
alot of us on here have done them, were here for ya if u need help