The ground round that I dehydrated has a smell to it, not much but a little.  I don't think I'll use it.  I did what everyone suggested - cooked it thoroughly, rinsed it well with hot water & then dehydrated it to grape nuts consistency.  I was extra careful with cleanliness during the process.  Unfortunately all I have is one of those older dehydrators with just a heating coil and vents, no fan or thermostat.  Don't think I'll risk it :-X.

On a more positive note, the apples - bananas - lima beans - potatoes all have turned out great.  Next is broccoli and carrots :).  

dlk