In the 19th century, coal miners would often take caged canaries into the mines with them. The canaries, being more sensitive than the human men, acted as an early warning system to dangerous environmental toxins. Today, we are surrounded by what are assumed to be harmless substances, enhancing our lives in a number of ways. Have our modern-day canaries become those few individuals who show adverse reactions to these compounds? Here are the details of my life as a canary.