If you have xkit, you can block the notifications for that post. Or delete the original post and re-reblog it to keep on your blog and the notifications should stop.
(I did that for the musing after an actual musing blog reblogged it. This I don’t mind, since I don’t see too many people reblogging it for an extended time. Just didn’t expect that to get almost 200 notes in the span of not quite a day. (Says it still has a few hours until then.)
Plus I enjoy looking at the tags when they pop up, so a day or two of mass of activity, I can handle. Mostly since I still haven’t been active enough yet to need it to tell me when people reblog something I need to reply to yet. ^^; )