It's something that is pretty much taken as gospel in many countries that that happened

I've only checked the data for Italy but real inflation stayed pretty much constant while perceived inflation absolutely blew out of proportion.

So essentially people noticed some minority of shops raising their prices talking advantage of the little confusion around the exchange rate and never shut up about it since

Same in Germany. I remember the times, was a poor student. Restaurants took the opportunity to change prices, which everyone felt but did not influence the inflation. And that price hikes was overdue (at least that was the statements back then ... Which I found rationale)