1995 Chevy Suburban Leaking Water - Thermostat not moving?

I don't know what is leaking from my engine - it leaks when it's running - and it leaks for a small bit when it's stopped (makes a puddle about the size of a dessert plate). I stuck my hand in it - seems like it's water - it doesn't smell. My anti-freeze is orange - not sure if it smells like the green stuff did. Started over the weekend - filled up with gas, check engine light came one after 20 minutes of driving, right after I turned on the fan to defrost the front windows. Turn around and went home. Been driving it ever since - no check engine light - but funny smell (or maybe my imagination?) And I see the water dripping after I stop it (and no, I didn't have the AC on). Tried running it in neutral with the parking brake on and the AC on, and still drips - but quicker drips. Still seems like water. Coolant Overflow is still at the cold level. It's driving rough though - like it's not getting enough gas - thought maybe I got a bad tank of gas, but why would it be dripping water (right behind the passenger front tire). Thanks.