Endocopresis

One humanoid within range must make CON save against the caster's spell save DC or suffer explosive diarrhea for 1d4 rounds and be stunned for the duration due to embarrassment. 

If cast at a higher level, you can target one additional humanoid (2 at level 4, 3 at level 5, and so on). 

All enemies within 5 feet of target must also make a CON save or be forced move 10 feet away in a random direction to avoid the smell.