Hi all I hope nobody minds me joining this group on behalf of my horse who seems to have severe asthma. She seems to have allergic asthma with high eosinophils in her lung wash fluid, but I'm sure one of her main triggers is ozone pollution in the air. Throughout Autumn she had severe attacks lasting several hours almost every day. She had the same problem 4-6years ago (with symptoms every hot or sunny day from March-November) but then it got better and it was then manageable for 4 years but has now become unmanageable again. She didn't respond to oral preds at 1mg/kg or inhaled beclometasone or inhaled fluticasone and she got severe bacterial pneumonia twice after steroids. I have learned that ozone reduces the bodies antibacterial defences. I have been really interested to read all the different drugs that humans take. What I really struggle to know is how painful this is as I'm not an asthmatic. She looks in so much pain for the few hours that she is bad, but then she recovers again and her breathlessness is much milder overnight. If it rains she has no symptoms at all and can exercise just fine. Does anyone have ozone triggered asthma and can tell me how painful it is? It makes her breathing extremely rapid and shallow. Any advice on any aspect of her management would be much appreciated as veterinary science is so far behind human medicine. Are there humans with asthma that don't respond to preds? My mental health is severely compromised with the worry of how ill she is and the dreaded decision on whether it would be kinder to euthanase her so I would be so grateful for any feedback from human sufferers.