-doctor, i have a problem, well, it may be a problem.
-what's wrong.
-my farts are odorless.
-what?
-that. my farts come out with no odor no mater what i try to make them more "normal".
-ok, let's see, drop your pants, bend over and fart, I´ll snif it up.

**pprrrrffff**

-I know what the problem is, you're going to have to undergo an operation.
-you are going to operate my belly?
-Nope, YOUR NOSE MOTHERFUCKER!