hi i am a respiratory physio from India, dear friend first things are first, rule out the causes of asthma attack like, what would be cause of previous attack and what are causing allergy's and my sincere advice is to be away form them.
the second thing is learn relaxation techniques and always be relaxed this will reduce the risk of attack. specially learn the relaxation way of breathing.
finally carry drugs given by physician with you to prevent any worst conditions, last but not least avoid dust and mist exposure.
have a rapid recovery :)