Other indoor contaminants that have been discussed in detail are the usual ones such as gas stoves and building materials.The article also highlights the fact that modern facilities such as air conditioning and weatherproofing helps retain the contaminants indoors. In this regard, Corsi points out that Americans spend nearly 87-90% of their time indoors, making indoor air quality an important topic that needs to be researched. It has been noted that some of the common contaminants include CO, NOx, and VOC’s (volatile organic compounds). One VOC, formaldehyde has been found to be emitted from panel board and furniture. Other sources of VOC’s are computers and laser printers. Radon, a carcinogen, is also a matter of concern when it comes to good indoor air quality. This is because drinking water may be one entry point for radon to the home along with other products as a result of the chlorination of water.In this article, Corsi has pointed out that whenever the issue of air quality is discussed, importance is given usually towards outdoor air quality, whereas indoor air quality is often neglected. Likewise, when it comes to funding any study or research on air quality, it is usually out door air quality that is considered as the judging criterion, while indoor air quality is totally neglected. This article, therefore, highlights the need for extensive research and funding for studying indoor air quality as well as stresses on the need to educate the public on its importance.The authors in this article study the chemical reactions that occur around the head when colognes or perfumes are used. The study is aimed at studying the reactions of ozone with terpenes and terpenoids that are known to cause elevated particle concentration within the body of the wearer. Such increase in the levels of these substances can give the wearer respiratory symptoms or eye reactions. Linalool is one of the common terpenoids and is used in many products.