You could say that it was a little something I did. Although, you need not worry about it.

[AFter all, this little curse of hers was something she and Xingqiu did out of pure boredom. It was just amusing to see who would take such a thing seriously.]

Even if you didn't send it out to five people, the curse may or may not give you bad body odor. However, given how random it is, you might need to send it anyway.