Other information:
Engine coolant reservoir. See Checking the Coolant.
Brake fluid reservoir. See Checking the Brake Fluid.
Battery. See Changing the 12V Battery.
Power distribution box. See Accessing the Under Hood Fuse Box.
Air filter assembly. See Changing the Engine Air Filter...
Inspection
NOTE:
There are typically 4 types of objectionable odors found in a vehicle:
chemical odors
environmental odors
human and other interior-generated odors
microbiological odors
Before determining that A/C odor treatment is required, determine the source and the circumstances under which the odor occurs...