anti freeze leak on 2000 Dodge Durango

wife came home and found a little antifreeze on the car mat on the passenger side floor mat. could this just be that the hoses need replacing or the heater core. Also she said sometimes little wisps of smoke come out of the top two vents when the deforst is os on or heater.

Asked by for the 2000 Dodge Durango
Probably the core. Not an easy fix on most vehicles. Most if not all the dash has to come out.