Actually my pd loves the smell and taste of vinegar. I tried dabbing white vinegar and apple cider vinegar onto places I don't want him chewing and he sat there licking instead!
Bitter apple is what I tried first ... once again, he practically drank it up!
When my baby starts chewing something or getting where he shouldn't, I have a large bin I put him in. I tell him NO very firmly and place him in the bin (no lid!) He HATES it! I think it is partially lack of anything to do, partially lack of being where he can see me. I put him in there for 10-15 minutes and by the time he comes back out he's all cuddles and wanting to make up. He still goes where he shouldn't sometimes ... but all he needs now is a firm NO and he will 90% of the time stop chewing.
If he is still misbehaving, he gets placed in his cage for the rest of the night. I counteract the temper tantrum he throws in his cage with a large blanket now. Out of sight ... out of mind ... he calms down within twenty minutes
PDs are like toddlers. They are stubborn and will try to get away with something if they feel like they want to (at least, mine is anyway LOL!). I would NEVER spray a toddler with vinegar ... no matter how dilluted!
But a time-out is fine and usually works better, imho
they will however get mad at the water gun and if you leave it out in their reach they will chew it to bits lol but they stop being mad at you for saying no and locking them up for bad nibble habits...and decide to hate the water gun . but it worked great for me 
