Asthma
One in 10 young people has asthma, but the annual peak for emergency treatment is September.
"I was in and out of hospital every week...Asthma was destroying my life."
"The same mistakes are being made again and again because essential recommendations have not been implemented."
In the UK, 44,895 cases of asthma could be avoided if the country reduced air pollution.
People with asthma, eczema or hay fever may be more at risk.
"Many fall out of the routine of taking their daily asthma medication."
Doctors told me studying in the big smoke was putting my life at risk, so I had to give up my dream career in London. When will the government act to protect people like me?
If it's found air pollution-aggravated asthma was the cause of Ella's painful death, her story could change history and policy, and help bring about clean air for all.
Asthma UK says some sufferers are put in danger by prescription charges.
"When we look at the evidence we do have, there’s enough grounds for serious concerns."