A family of Rats (w babies) made a home in my cousins LX-470 blower motor.
They were probably quite comfy to until the blower motor came on.

Took months & big money to rid themselves of that smell!!

 

Break out the shop vac and start sucking up all the accorns and debris up. At least its just plug wires and not the engine harness. Next time put the car in the garage or a rental storage (indoors) and scatter moth ***** throughout the car and possible put the car up on jack stands.