How very very sad.
Blu - I happen to think it was a stupid "treat" to give a toddler too. Sad as it is - I think the more people that come along and realise this by reading this thread the better, quite frankly.
I also think that ALL parents should do a first aid - particularly baby first aid course. Rescuss for a baby is quite different to that of an adult.
You would never try adn put a baby on its back to remove an obstruction with your fingers. You lay them across your knees and give them a hard wack on the centre of their back with the heel of your hand - several times.
If THAT doesnt work then you put them on their front - and poke with two fingers in their solar plexus area very very sharply to dislodge the obstruction - if that doesnt work you try to do Mouth to mouth in the hope that you can get some air in (assuming baby/toddler has lost consciousness).
I might start a thread actually......