Leaking green slimey fluid

[E70x5]

Came out to the garage this morning and noticed the car leaking green slimey fluid. It is leaking from the front corner under the passenger side running board just behind the passenger side front tire. A slow drip, I smelled it, no odor. The substance is more slimey than it is oily and no distinctive smell. I looked under the hood and didn't see anything leaking or dripping. The only thing I saw on the passenger side fire wall is the reservoir for the windshield washer fluid. I started the car with no warnings lights or fluid low warnings. Anyone have an idea as to what it can be ? Any input would be appreciated.