Like Snakey this isn’t an ‘official’ road name – at its bottom end, I think it’s actually called ‘Mill Lane’, but also like ‘Snakey’ I think a good proportion of Salisbury people would know where you meant.
Stink Pot Alley is very roughly parallel with ‘Snakey’, in that they both join the same two roads – Devizes Road with the road that runs through the Avon Valley, which is Stratford Road at the point that it joins Stink Pot Alley.
I have been told that the name derives from the abbatoir that used to be at the Stratford end.
Update: I googled ‘Stinkpot Alley’, just to satisfy myself that it is a name that is generally used, and not just a name that was used within my family or groups of friends, and found the name was used both within a sad story in the Journal1 and within Wiltshire County Council’s ‘Local Transport Plan Annual Progress Report’ for 20012, which also includes references to a couple of paths which I knew of, but hadn’t included in this list (Broken Bridges, Milford Hollow) and one I’d never heard of before – Piggy Lane.
[...] which is a Northern suburb of Salisbury. In turns into a smaller path, which is popularly known as Stink Pot Alley. Millers Close is a road leading off from Mill [...]