What that means
In general stinky, smelly, groady (in any order) means too much water and not enough air. Or not rinsing frequently enough. Or too high a temperature. Or any two or more of the above.
Rinse at least 2X a day, lay the jar or tube down on its side and shake so the seeds or beans get spread out. Keep cool and dark until ready to green up in the light the last day.
Of course, using the fabulous, world famous ShivaSprouter, cheap at half the price, which I detailed in another recent thread here would probably answer ALL your problems, but I don't want to seem pushy or anything. :)
Love, love, love,
- Shivananda Deva