My father is 57 year old a retired professional known asthmatic but well controlled and haven't been on any medication up recently. A week back there was a flare of asthma following a laborious dusty house cleaning session. He used Asthalin 100mcg inhaler 3 times a day for one day and 2 times a day for another two days. It was fourth day since his flare, he still have a wheeze on both inspiration and expiration. Fairly doing well but not having some discomfort. What should be done to relieve symptoms?