Clean Air Would Be Nice

My kids have some serious problem with allergic. They are allergic to dust and smoke. This can be pretty serious for them. Last time, my daughter coughed for more than three weeks. And the doctor said that she could get asthma if we did not give full attention to her sickness. That's why now I am thinking to make the air in her room more clean. Clean air would be nice for her health. But I think I should get ozone air purifiers for her room. This equipment can provide a better air circulation in her sleeping room. I am not sure where I can get this equipment. But I guess I can order it online as well and let the store ship the product to my home address. We should not wait to long for this. The kids health are very important for us. We want them to stay healthy without having sickness at all.