Oh, we've all dealt with that one a time or two! Buffy, our first Fila, was deadly! You never heard them, but eeeewww, when the smell got it's claws in your nose . . . horrible! Charlie was insisting on feeding her Purina HiPro, which isn't much worse quality food than the Eukanuba.
Bimmer, being the gentleman he is, almost never farts. I really can't remember him ever having gas, but his digestion is so efficient. He can catch and eat a groundhog and not have any smell on his breath.
Shiva and Kharma, along with Bimmer, of course, are on the Innova, and although the two dainty girls still fart occasionally (it's a Fila trait), it's not anywhere near as noxious as Buffy's were. They're also having less waste products since their food is very digestible.
Maybe Phyl will have something to say. Her Corgan is a Siberian.