Here are only just a few of those articles reporting on the detrimental effect of ozone.

www.consumerhealthreviews.com
The ozone layer of the atmosphere is very high up, at the edge of space. This ozone protects us from dangerous UV radiation. However, excess ozone at ground level can be extremely detrimental, and can actually trigger physical symptoms such as respiratory distress. This is of particular concern to the 15 million adults and children who have asthma.

www.lungusa.org
Ozone acts as a powerful respiratory irritant at the levels frequently found in most of the nation's urban areas during summer months. Ozone exposure may lead to: shortness of breath, chest pain when inhaling deeply, wheezing and coughing

www.airnow.gov
Ozone can inflame and damage the lining of the lungs. Within a few days, the damaged cells are shed and replaced-much like the skin peels after a sunburn. Studies suggest that if this type of inflammation happens repeatedly over a long time period (months, years, a lifetime), lung tissue may become permanently scarred, resulting in permanent loss of lung function and a lower quality of life.

news.bbc.co.uk
[...] the British Allergy Foundation (BAF) is warning that ozone, given off by office equipment such as photocopiers and computers, fax machines and printers, can make office workers ill. The gas can make asthma and allergies worse. And even people who are fit and well can be affected.

www.accessdata.fda.gov
Although undesirable physiological effects on the central nervous system, heart, and vision have been reported, the predominant physiological effect of ozone is primary irritation of the mucous membranes. Inhalation of ozone can cause sufficient irritation to the lungs to result in pulmonary edema.

www.hc-sc.gc.ca
Health Canada is concerned with the adverse health effects that may result from the deliberate exposure of the public to ozone from air cleaners that intentionally generate ozone gas. Ozone is an irritant that can cause coughs, chest discomfort, and irritation of the nose and throat. A risk evaluation by Health Canada concluded that the direct and purposeful generation of ozone in indoor occupied spaces should be avoided.