Ozone is NOT
a form of indoor pollution.
Ozone <span><span>or </span>trioxygen<span>, is an inorganic
molecule with the </span></span><span>chemical formula</span> O<span>
3</span><span>. It is a pale blue
gas with a distinctively pungent smell. </span>
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If you have any other questions,
please don’t hesitate to ask me.
The three main categories are health, disease and safety.
