Well, after posting that the smell was coming back again, I can now report
that it hasn't got any worse!
It's still there but nowhere near as overpowering as it was before. It has been cooler yesterday and today, but even on Sarutday when it was very hot we were able to stroke him without holding our noses.
I had already started the tomato paste before reading Penel's post about using it with caution, but am only giving a very small teaspoon-full in each meal.
Of course he has had one treatment with Malaseb, but other than that and the tomato paste we have changed nothing. So it looks like one or both of them has started to work. So I guess we keep on with both of them until the smell goes completely then drop one of them and see if the smell comes back.
Thanks so much for your support. You can now relax knowing that we won't pong you out on the next COL meet!
I'll be back if it comes back with avengence!
Edited to add: I don't bl**dy well believe it!!!! You'll never guess what's wafting up from between my feet now.
What's that about? Minutes ago he was here and not smelling all that bad, now he's a right stonky git again.