STINKY SWEET SMELL COMING OUT OF AIR CONDITIONER WHAT CAN THAT BE

Heater core is contained within the vehicles HVAC system - along with the air conditioner evaporator - so if the heater core has a leak - it will also be pronounced when a/c is on .. The “sweet” part is what makes this more indicative of antifreeze as opposed to the normal - or more common stale smell associated with air conditioning. As previously stated - this will require *hands-on* evaluation by trained personnel. Good luck!