Roman swear words ,oaths, and insults

[Longovicium]

Regarding the wiki post referenced earlier, I came across this interesting definition:

P?dere: fart

P?d?, p?dere, pep?d? (or pepid?), p?ditum is the basic Latin word for fart.

As my main interest is in the later Roman military, I wonder if the title/rank 'Magister Peditum' now carried a hidden meaning . . . hock:

Can anyone clear this up for me - if 'peditum' as in 'fart' also allowed punning insults to carry over into military slang that would be quite a useful find . . . Or have I smelt the wrong end of the 'cack' here, I wonder?