Emts thought my allergy induced asthma attack was a panic attack, could this be true?

Maybe: Did you have a thorough medical assessment ? There could sometimes be a mix of symptoms. Since there may be some overlap in sxs - a concentrated eval is the best way to distinguish.

Depends: If your lung function test was otherwise normal during an attack, then the problem is likely from something else. Whether it was from a panic attack or not needs to be evaluated by your doctor. Do note that vocal cord dysfunction (when the vocal cord closes up while breathing in ) may be misdiagnosed as a panic attack. If this has been frequent, consult an allergist.