Yes, Red -- everyone with asthma should have a rescue ihnaler like Albuterol for those moments when it's needed. It should be carried with you at all times.
Wheezing doesn't always require the use of Albuterol -- sometimes it passes uneventfully after a short time. But of course if you feel shortness of breath or real chest tightness than relief is called for.
Your controller meds like Symbicort, Asmanex, Advair, etc. should be used as prescribed whether or not you're experiencing any ashtma syjmptoms at the moment. The controller meds are for long term use and not for quick relief of symptoms.
Hope this helps.
Ditab