Toxic gas ‘helps lung patients’.BBCnews.March 19, 2008. A toxic gas could improve the lives of patients with serious lung conditions, scientists suggest. Carbon monoxide – found in car exhausts and produced by faulty heaters – causes more than 50 deaths a year in the UK. Dutch researchers, reports New Scientist magazine, believe at very low doses, it could relieve asthma and chronic obstructive pulmonary disease. However, a second specialist says he has serious doubts about its safety as a treatment. [ See ]. See previous notice about another utility of toxic gas: With carbon monoxide