Leak under car?

I am changing my coolant in my car listed above SVT Cobra. I'm flushing the system with coolant cleaner and distilled water. The water is not cold, and the hoses are changed and new. On my second drain and refill, I noticed a leak under the engine near where the transmission meets. Now it has always had water there from the AC/heater by the exhaust pipes. But if you look at the leak in the back (video attached) I haven’t seen this one before. It does not smell like coolant, it smells more like water than anything. Do you think this is a crack in a gasket or block?