I'm a lifeguard and lately I've been having asthma attacks on days when the allergens are high and it's really hot. This happens even after I use my inhaler, which I do faithfully 30 minutes before my shift starts and again halfway through my 6-hour shift. I've already had two mild attacks and one severe one. The severe attack was so bad that I needed emergency oxygen. What should I do? Is there something more I can be doing to prevent these attacks, especially since I have to work under these conditions?

Salbutamol inhaler and budesonide 200 sos is advised for breathing difficulty.