My cats will try their hardest to stay off my left leg which has the CRPS. Before we had Buddy sent to the big doggy playground they would beat both dogs for even looking at it. Yess I have noticed that they smell something different about my left leg compared to right. The only dog or cat I have encountered since getting this that will mess repeatedly with that leg are the senile ones. Im not being mean my mom has a cat and dog tnat are old as dirt and senile. Hyacinth the cat (Bram you might know the show Keeping up Appearances thats where her name comes from lol) used to be mean as a bear just out of hybernation. Now she just grumbles like an old woman lol. Got to love them all even if they do sometimes "grab" your attention lol.