2008 Infiniti g35 coolant leak, from where?!?

Hello, This is likely a heater hose or heater core leak. The heater hoses run from the engine cylinder head or block, through the firewall, into the climate control, and back out to the engine. The smell is either caused by the heater core leaking, or coolant running down the hose and into the heater core housing. Hopefully it is the heater hose, but get it checked out before the engine overheats.