Indoor ozone has received attention because of its well-documented adverse effects on health. Inaddition to the inherently harmful effects of ozone, it can also initiate a series of reactions that generatepotentially irritating oxidation products, including free radicals, aldehydes, organic acids and secondaryorganic aerosols (SOA). The overarching goal of this work was to better understand ozone and terpenedistributions within rooms. Towards this end, the paper has two parts.