If I were you I'd look up the Google 'aversives in dog training' search links below to get some expert dog trainer opinions. Most positive-reinforcement trainers tend to think it's an overly harsh way to train any dog, let alone toy dogs, by suddenly spraying a shot of liquid in their eyes and up their noses. Why use that kind of training when positive-reinforcement creates only a win-win for the dog, a tasty carrot vs. an unpleasant stick? Which motive would you prefer if you're the dog?
A nervous or uncertain, timid dog could be adversely affected by aversive training that can startle, intimidate or scare them, causing them to sometimes develop fears and anxieties they never had before. And if the dog feels he's been treated unfairly during training, he can brown off the whole experience and become recalcitrant vs. always eager for positive-reinforcement methods. And sometimes with aversive use, the dog develops a resentment of the one administering them, never fully trusting the trainer as fully again, or associates their use with other things going on at the time they are administered, therefore forming wrong associations.
I've seen dogs traumatized by training aversives use so I just want you to know both sides of how some dogs react to their use. As you don't know how your dog will take the use of aversive training, why take the chance, especially when there are upbeat, positive fun 'leave it' training methods you know any dog will love?
13 Negative Effects of Aversive Dog Training Methods - Daily Dog Discoveries https://www.google.com/search?q=aver...hrome&ie=UTF-8
P. S. Cellulitis is no joke so follow your doctor's advice and take good, good care of yourself, please.
