The Mystery of the stray Smartie part II

Ooh! I had the most terrible stomach ache all night ....
As if! I didn't really eat the smartie. What kind of idiot would eat a smartie that had been encased in dust for goodness knows how long?
I tried cutting into it (to see if there was chocolate inside) but it pinged away to some distant place under the fridge, and I ended up cutting my finger.

The Mystery of the stray Smartie where no Smartie should be

This morning, while I was hiding,  I discovered a stray smartie amongst the dust under the sofa. This is a mystery as nobody living here ever eats smarties, but how often do you find one in remote corners eg; under the fridge? This got me thinking about the Big Bang Theory: lots of dust + ? = the planet earth and as a consequence I came up with the Little Bang Theory: little bit of dust + ? = a smartie. You see, as no sane person would eat a  smartie that has been lying in dust for nobody knows how long, we don't know for sure that it is a smartie, do we?
So I'm about to find out ...