Not really, although sodium thiosulfate is pretty benign.
If you do any research into the history of photography you will discover that, arguably, the discovery of sodium thiosulfate's fixing properties was the most important discovery in the invention of modern photography.
Hmm I see! That's interesting, I didn't know it was that important. The x-ray fixer is a smelly thing,would rather use a more benign smelling thing. Or one where I won't need gloves!