Go when it's raining. It chucked it down the day we went and there wasn't a noticeable smell. On the other hand, it's pretty miserable wandering the medina in wet weather.
Since I had the exact same question, I did a little Googling, and the results were fascinating! It turns out the tanneries of Fez have been operating continuously – with no machinery or automation and using natural colorants for dyeing – for like a friggin' millenium. The leather produced there is prized for its quality, and exported to craftspeople all over Europe and the world, although many goods, like their famous slippers, are made right there in Morocco. Oh, and apparently you can just mosey into any of the several tanneries in Fez and they are happy to take you on an impromptu tour. I was so taken by this whole neat thing that I started helping the Wikipedian who created the pertinent articles with "translating" them into cleaner-flowing text. And I'm a vegetarian that doesn't even use leather!!!
Jokes aside, fracture should work. Fractures include faults (the correct answer).
The fact that the link goes to New Zealand is neither here nor there. The fjords (or fiords) in New Zealand are just as valid as the ones in Norway.
(I mean: I didn't try to enter "fiord," nor did it even occur to me. I have no horse in this race. But Jerry has a point.)