No fluid on the engine. I know the solenoids your talking about and they are fine.
If I have it running with the hood open, I can smell it pretty bad from the right side of the engine. Behind the throttle body, right on the engine and left of the battery. Just above the transmission.
I had a coolant leak about 10k ago and it leaked onto the top of the tranny. No real smell with that leak thought but this smell is coming from that area.