If your kids like Smarties -- you know, those little dime-sized candies -- make sure they're actually eating them.

There's a decidedly not-smart trend making the rounds where kids are crushing Smarties up and snorting them like cocaine.  

It's been around a while, with how-to videos on YouTube dating back as far as 2007, but it's just now becoming popular enough that healthcare professionals are seeing a pattern.

Middle-schoolers are being treated for cuts and infections to the nasal passages and lungs.  

In rare cases, flies attracted by the sugar residue have laid eggs in kids' nostrils, leading to infestations of nasal maggots.