Welcome back, C.!
Yes it has and still does about once or two a month. Sometimes it lasts a week or so, other times it is only a short one day spell. (Honestly, last year I had a few days asking myself: "What are you doing on the board like this? Is it fragrances or people you are more interested in?" ) How disappointing it is to receive a big box of 15-20 samples everyone is raving about in the mail and find just one or two that absolutely appeal to me.
I do not think it is terminal and we all do need breaks of sorts, but keep sniffing life's little treats -- flowers on the way to work, old library books, bakeries, produce from the farmer's market (vegetables and fruit smell different in the grocery store, I suppose), new shoes, your cat's fir, antique stores, etc. This "Mojo" will come again!