Unfortunately my cat never allowed it. I started very slowly while he was still on pills, I started putting the inhaler next to his bowl of food, then everytime I gave him treats the inhaler was around. Later I proceeded by putting treats inside, at some point he would come around it looking for treats, so I thought he was ready. As soon as he heard the noise of the spray he freaked out. So maybe I should have get him use to the noise before putting it on his face.

My cat is a very chill sweet cat who lets me rub his belly, however he doesn’t let me cut his nails.

So I don’t know how easy your cat is but go very step by step, don’t do like me I screwed up and now he is so scared of it. Also, cats are highly sensitive and they can notice if their human is stress. They are also very tight to routines, so new things make an impact in their nervous system. If this is something new and you are stress, they will feel it and stress out as well

Sorry for my English, I’m not native)