Health Effects of Ozone

Ozone is safe to use around humans as long as you have the correct concentrations and use for a safe period of time. The chart below shows the details: Concentration(ppm)
Duration ofExposure
Effect
ACCEPTABLE
0.01-0.04 Odor threshold.
ZONE
0.1 Minor eye, nose and throat irritation. 0.1
8 hour average exposure limit >0.1
few minutes
Continuous headache, shortness of breath. 0.25-0.5
2-5 hours
Reduction in lung function and the ability to do physical work (for persons with a history of heart or lung disease). 0.3
15 minute exposure limit 0.4
2 hours
Reduction in lung function during moderate work for all persons.
HAZARDOUS
>0.6
1-2 hours
Chest pain, dry cough.
ZONE
1
1-2 hours
Lung irritation (coughing), severe fatigue. >1.5
2 hours
Reduced ability to think clearly. Continuing cough and extreme tiredness maybe lasting for 2 weeks.Severe lung irrituation with fluid build-up. 9
intermittent
Severe pneumonia (arc welders). 10
Immmediately dangerous to life & health
CRITICAL
11
15 minutes
Rapid unconsciousness.
ZONE
50
30 minutes
Expected to be fatal.