Q: A few years back I purchased an ozoniser from India for air purification. While it was operating, my son (13 years old at that time) accidently inhaled the ozone gas for a couple of minutes. As a result, he got cough, and since then has been taking treatments for respiratory problems. He is 16 years old now and has asthma. I want to know if this is related to his inhaling ozone. Is there a permanent cure for asthma and related respiratory problems?

A:An ozoniser is not a cause of asthma, but as is the case with any other strong odour, the airways might be sensitive to the odour or fumes. All asthma patients should avoid irritants, since asthma is a disease that should be recognised as incurable while being preventable and controllable by minimising symptoms with careful use of medications. The occasional case of bad or unfavourable response depends on individual trial and assessment.