That was my worry at first, but it has no odor and did'nt leave a residue when I cleaned it up. So I am pretty sure it is from rain or snow.
I know this question has been posted a hundred times, but I can't find the external fuse to the blower motor, the slip in the fuse box says that there is one but I spent about a half hour looking for it last night and did'nt see anything that looks like what others have described and it rained last night and I think there is more water in the car.
I commute two hours and between no defrost and wet feet it was'nt a pleasant morning, at least not what i've been used to with this car.
Thanks.
Update
Well I found the fuse and it was right next to the fuse box, I had been looking around the inner fender. But still no blower so I guess I pull the motor out next.