Sounds ike a tech was At the head of this.mJust lay it out for the vet next time. But if animals that are in quarantine that need to be in there then I would not want my pup jext to them. The techs spray with Lysol when leaving the room here...mNot the healthiest place. Lonely too if empty.
If all other dogs are vaccinated then theoretically it is only your risk. And intranasal is highly questionable at best anyway.
It us hard ti stand up to them. You'll get em next year.