Like I said I really don't have an answer..... a smell, sound can send me into an anxiety/panic attack. and it happens faster than I can pinpoint what triggered it. I try to remove myself from people, because I hate the cliches "just calm down" "don't get so excited" etc. what most people (without diagnosis) don't understand is that when you have an anxiety/panic attack... your BODY, not your mind has gone into fight/flight mode... So mostly I have to wait it out.... try to remember to breathe
Sorry can't be of more help... having bad time with this same issue right now.