Thanks for the second link, Lookforkim! They might be a little more cautious than necessary, but that's their job.
I also agree with Chelle: the sooner you start aging your own pile of manure, the sooner ANYone would agree it is safe to add on top of a bed, even if you have low-hanging lettuce leaves.
A compost pile doesn't smell if it has enough "browns" to balance the "greens". If there is plenty of straw or sawdust in the manure, it may already be balanced. If not, some paper or sawdust would keep it from smelling.
Meanwhile, there are many things you can turn under to lighten and enrich soil: bags of compost, bags of composted manure, fine bark mulch or small bark nuggets, organic fertilizers like fish emulsion or bone meal ...
I enjoy cultivating and feeding the soil even more than I like cultivating and feeding plants!
