I have not noticed an unusual BM odor; but I have definitely noticed urine odor. I have better BMs.
I'm happy for better skin; and don't mind having to trim my nails and hair more frequently. I'll be happier when I see noticeable improvements in 60 year old wrinkles. However, I'll just be happy to get rid of any one of my problems.
It seems that I'm doing the same method as you. That is with spoonfuls in water, but early in the day; and saturated water during the day.
My right shoulder was having rotation problems due to a mild strain about a year ago. I thought I might be getting something more sinister. After using the DE for about 4 weeks, I'm no longer having problems with it. Only occasionally when showering and I reach too far. Need to get back scrubber. It is much better than before DE.
I've noticed that with more age there is more maintenance. Same as with houses.