Absolutely! @Bunnylady @Samantha drawz @promiseacres @Shorty @Hens and Roos @Pastor Dave There are others, but I can't recall all of them. The above compile many years of experience. I hope they can provide better guidance or assistance.
If the buck was ours, we would immediately cull(in this case euthanize) the one that has white discharge coming out of his nose-no breeding-no contact again with your others- there is no point in increasing the risk of it spreading.