Noun - A minute portion of poo matter.
Released with ass gasses these small poo particles contaminate the atmosphere. Entraping these in someone’s pillow may result in Pink Eye.
when you think you did a little, harmless fart without any force but it leaves a little 'residue' on clothing (or wherever you are sitting/ lying down) aka 'fart particles'
uh-oh... I'd better go to bathroom, that fart was worse than I thought - I'm detecting farticles.