I didnt mean to imply you may use aerosols as punishment, I just meant some have a similar noise and this may scare them if the spray has been used to either punish and/or deter them.

Spays do scare dogs, maybe not of the owners but with behaviour in question. Using the chewing as an example, the dog chews the object and gets sprayed behind the ears. Doest hurt but its not pleasent, this keeps happening and the dog then learns that chewing said object results in a wet ear the dog may then fear the object or decide the object is evil and needs killing, resulting in more chewing. If you make a mistake and the dog sees you spaying the water at it, it could turn out to be you its chewing. Not exactly pleasent as far as im concerned. That is why I would never recomend it, there are risks involved.

Dogs of a nervous disposition anyway will become more fearfull and those that are either scared or angry may become aggressive. I just dont think its worth attempting. Particually when there are other methods that are much friendlier.