They don't give preventers (the brown inhalers) until they are 2ish, until they can do the peak flow, but ours gives relievers (blue inhalers) based on the symptoms. The relievers don't help wheeziness much - it comes back again pretty soon after taking it, but they do stop a full on attack if they're starting to go blue and just can't get enough breath. It's also really hard to use the bubble - they've got to be really gasping for breath for the valve to work. Since getting rid of his chest infection, Alex has only had two proper attacks, once when first giggled and got a bit over excited, and once when he had a paddy getting out of the bath.
Sarah, does he get giggle wheezes? Dan still does it now. He'll start giggling, the asthma starts, which for some reason makes him giggle more, which makes the asthma worse... He used to wet himself every time (he's grown out of that though)
The proper name for the bubble is a 'spacer' I think - bloomin stupid name, it's a bubble.