I am a lifeguard and have been having asthma attacks on high allergen and heat days, even after inhaler use. I use it almost religiously 30 minutes before work and halfway through my 6 hour shift. I have had 2 mild attacks and 1 severe. During the severe, emergency O2 was administered.
Salbutamol inhaler and budesonide 200 sos is advised for breathing difficulty.