Just to be clear: these aren’t the same Smarties sold in Canada. They are powdery candy sold in a tube-like wrapper rather than candy-covered chocolate treats in a box. According the Wall Street Journal, the kids are crushing these things up in the packaging, inhaling the ultra-fine dust and blowing it back out like puffs of smoke. As multiple YouTube videos illustrate, the effect is shockingly authentic. Some kids have perfected the art of blowing smoke rings, and blowing the dust out through their noses. The long-term effects of candy dust on the lungs and airways aren’t yet clear (so far, there have been reports of minor irritation and burning), but needless to say, parents are not pleased.