The phrase "carcinogenic chemicals" refers to substances that are known to cause cancer or increase the risk of developing cancer when a person is exposed to them for a long time. Full definition
Fisher may be on to something, however: Studies have found that phytochemicals in garlic can halt the formation of carcinogenic chemicals in the body, and that women who eat more garlic have lower risk of certain colon cancers. (health.com)
Their was a study done by NOAA on the air quality in Erie Colorado, close to my home where their is lots of wells, and it stated that they found levels of Methane, butane and some other carcinogenic chemicals in the air were higher then levels in big cities like Houston Texas and Pasadena California. (ourchildrenstrust.org)
Food safety officials in Telangana conducted a surprise raid at Kothapet fruit market, Hyderabad unearthing the rampant use of ethylene powder, a toxic chemical imported from China, and other carcinogenic chemicals to artificially ripen mangoes. (fnbnews.com)