This poem is in response 
My own farts smell bad.
But it's the smell from within,
A creation of my own body.
So the bad is... actually good.
Your farts smell bad too.
But the foreign profile of them,
Their strange origins
Makes their bad... really bad.
They could be exactly the same,
Identical olfactory constituents.
But the source matters.
To the mind's nose,
The smell from within is always
The sweetest.