Welcome to 2CarPros.
What kind of fluid? It's normal for condensation to drip, but that should be the only fluid, and that should only be on start up and for a short time after.
As far as the loud noise, that isn't being caused by fluid. Have you looked under the vehicle to see if anything is broken or rusted with holes?
I attached two pictures below. They show the exhaust system. I circled specific locations which are common to fail. Check these locations for rust issues, broken pipes, or holes.
Please ignore the first two pictures. It copied twice.
Let me know what you find.
Images (Click to enlarge)
Monday, September 9th, 2019 AT 8:09 PM