After spending three days camping with my family of four our black water tank was near capacity. No problem when we left for home, but about three quarters of the way home started getting bad septic odors inside. Rolled down all the windows, but was a relief to get home. Saw some effluent driping from bottom of RV on the outside. I emptied the tanks, and there seems to be no lingering odor. Anyone have an idea on what the problem is. What kind of connection is there between the toilet and the tank . could there be a broken seal or pipe that would allow effluent to get betweem the floor and the protective metal on the bottom of the RV when the tank has a high level. Thanks