Is fart smell healthy??

When a friend around me farts, it smells really bad.
So I recommended that you visit the hospital once.
I heard you went to the hospital, but the smell still lingers.

I smelled an incredible stench like rotten garbage from him.
I don't know why, but they said it's normal.

But since he keeps sticking around me, I keep smelling, what should I do?
Is it true that fart smell is related to health???

Source:Here is my concern.