Heavy Clouds In the Lavatory

U.S. and Canadian air-safety experts are comparing notes on the often dangerous ways cigarette addicts try to foil lavatory smoke detectors. Smokers frequently remove batteries from the detectors, while other passengers carry shower caps to cover the devices. Some smokers have been caught desperately blowing smoke into vacuum-operated washbowl drains and toilet bowls. Other fliers find legal but far more elaborate methods to circumvent the law banning smoking on domestic flights of six hours or less. Tobaccoholics traveling coast to coast have been known to book a stopover in Mexico as a legal way of obtaining a smoking seat aboard an...