Dan Quinn wrote:

Currently I'm working with Photographer's Formulary 60% ammonium
thiosulfate. I would class the concentrate as oderless, fumeless. At
a 1:31 dilution and in a tray, I can detect no oder.

I have to wonder if at 1:31 anyone would notice much of an oder even from
F-5 .

At this time, as
with the sodium, no additives are used. I use fix one-shot. I've
not yet measured the ph of the ammonium. I'd guess it's close
to neutral, ph7.
As I've stated I'm not affected by the fumes but am glad to be
done with the oder. You'd think Kodak, Ilford, or Agfa would have
made somthing of fumless, oderless processing decades ago.