DS (4) has been taking Clenil for 3 months as a preventative measure, as he gets viral wheeze and a horrible cough several times a year. He's just come down with another bout and I'm wondering if this is supposed to happen after all this time on his inhaler... He did take a break for about 2 weeks not that long ago, as he had enough of the taste/smell and refused to let me give it. Would that break be enough to undo any preventative effect?