Hello everyone! I have been thinking deep about this. It is not a shameful thing, infact it is healthy as long as you know your limits! If you have any questions, go ahead; here's my fart tier list!
Loud and Nice: Loudness is essential if we are even just talking about a competetion here. The "nice" stands for how efficient it is for them to do it.
Just Loud: title explains itself. Again, loudness is essential. Although if there's nothing else to it, it is clearly not the best.
Ehh: title explains itself again. Wilson is the average boy with an average life and average, boring farts. I also thought Warly would fart in an average extend, because I bet him taking good care of his tummy only helps his digestive system.
Not nice at all: Yuck! I won't explain everyone in this tier list with extended details, but using poop as a skin treatment and old age doesn't really go along with digestive system! And think Wheeler as Warbucks, not as Wheeler.
No: I won't talk about the minor characters. But the silent farts are always carry the worst essences ahahahah! Also I don't think robots can fart, and old men who sat in a stone chair for god knows for how long clearly doesn't have a nearly mediocre digestive system! Yuck!