its the touch receiver under your hip bone should be a contact object with a receiver and a sender on it so you should have to unpack the werecock asset and add an object toggle to the vrcfury component to turn it off.
add this to your toggle for the cock, turn it off when the cock is on ^>^ that should prevent the cock from Arousing yourself as for the blush for your belly and face , that's just apart of the arousal system, you could change that in your FX layer of your avatar or maybe make a Boolean to switch your blush off or on if you wanted to toggle that aswell.