Smell is just signals interpreted by a brain from particles detected by receptors in the nose, so no.

The fart particles will ride the winds across the continents and sooner or later find their way into my nose, so yes.

The fatass is a person too! They should be able to smell it! Stop being racist towards fat people.

Doesn't matter, just be thankful that no one was around.

If a fatass passes wind, it is what we call a hungerstorm.

The fainter the sound, the stronger the smell!

Hold on. . . If no one is around to smell the fart, does it make a sound?