Arlo's Noxious Skidmarks

This spell is a minor magical trick that was formed as a schoolyard prank, much to the dismay of the Magic Professors. You create one of the following magical effects within range:

• You instantaneously teleport a small mass of humanoid feces from the bare hand of the caster into the clothing of the target. 
• You instantaneously infuse a small mass of humanoid feces from the bare hand of the caster into any textile material within range

In addition to the previous effects, you also create the following magical effect.

• You instantaneously create a noxious odor emanating from a textile material you can see for 1 minute. Any creature within 5 feet of the material at the start of their turn must roll a constitution check against your spell save DC, or take 1D4/2 poison damage, rounded down.