ear solution sphynx health

Hi all, I have a 5-month-old male Sphynx kitten. He has been dealing with a poor immune system thanks to the breeder who didn't take care of something when he was very young (per my vet). Because of this we have incurred a lot of vet expenses in the two short months that we've had him. We are...

I will cleanIng Bills ears with Vetoquinol solution and may have gotten it in his mouth. He foamed a little and shook his head and foam was coming out of his mouth. He seems fine now but should I be worried?