MrB has a history of sneaking dogs in without asking for approval. We just learn of it when it starts barking and the smell comes out into common indoor areas or if I happen to see a glimpse of it outdoors.
Excessive barking and offensive odours are both grounds for action at NCAT, regardless of any by-laws. And, yes, Mr B will take this personally. Perhaps a letter to the strata committee explaining your options, and inviting them to sort this out to avoid any unnecessary conflict, might do the trick. Couched in terms that you don’t want to cause trouble but you feel you are being ignored might soften the blow.