Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. / D- q$ X" \, o3 n1 [; u 1 H4 R3 S9 {! ~( I0 V9 U; e) c( BIf it does have mold and can not be wipe out, then you have to change out the whole seal.. I bought a new seal and changed out few weeks ago.