Oregano oil may cause an allergic reaction in some people. If you’re allergic to oregano or to other plants in the Lamiaceae family, such as mint, sage, basil, and lavender, don’t use oregano oil.

A man with a firm be­lief in ed­u­ca­tion, Cool­man in­tro­duced the oil quiz to schools in the com­mu­ni­ty. At the OW­TU’s 73rd An­nu­al Con­fer­ence of Del­e­gates in 2012, it be­stowed its ...