Thank you for getting back to me. The strange thing about that was, after a day of sneezing, I called our vet and told him what Bogie was doing. He said that I would need to bring him in. He said the booster shouldn't have caused that. I sometimes wonder about him. He just didn't seem to want to talk about the booster. I have always trusted his judgment until that happened. This vet can be moody too. Maybe he was having a 'bad hair day'.

Thanks again for your help.