Gesundheit! Salud! Bless You!

So as Ive said before, there are a lot of Germans in my business classes. Today in International Marketing I had a bit of a sneezing fit and I was sitting next to two German girls who are in my case group, since they are practicing their English one kept saying "Bless you!" then my prof said "Salud" (as she's Spanish) and then the other German girl said "Gesundheit", and then I burst out laughing. Not in a disrespecting way or anything, it's just that we say "Gesundheit" in Canada, but Ive never had a German native say that to me before, and it just made me laugh.