if you think it is tranny fluid, maybe you should take out your tranny dipstick and see what type of condition it looks like it is in and make sure that the level is proper as well. Also, smell the tranny fluid.........is this what you are smelling or not. If not, it is most likely an oil leak, although it could be from any fluid. Are any of your fluids low(check the oil just before it is due for a change-power steering low? brake levels? Anti freeze? etc.)
Now thats thinkin with your dipstick, Jimmy.......