I'm looking it up now, and don't see much difference. Maybe it's the brand I got..? My fiance and friend who was living with us last winter also were disgusted by the smell.
I'd be willing to try it again.
Mine would stink too, but it depends on how long you let them soak. I wouldn't do it for more than 12 hours... just long enough to get released from pellet form. You can speed it up with hot water. But still, not more than 12 hours alone. In the ff, it didn't seem to do that.
Strongly considering alfalfa cubes now.