I was coming back from Milan earlier this year and bought some parma ham from the shop in the airport - one for myself and one for my sister. Anyway, result was my bag got pulled for secondary searching. The lady who did it explained that ham can look like explosive material on the scanner. It was all packed in my full rucksack so took some time to empty - but it was all fairly pleasent and I was not in any rush for my connection.

Here are the offending items. Next time I will just have them separate in a plastic bag.