21.   The ash was blowing away from Mexico City to the southeast, and reporters about the helicopters said they smelled sulfurous gases.

22.   The government said residents had been complaining for more than a month to San Juan Gas Co. that they smelled leaking gas.

23.   The three had apparently gone inside after smelling gas, authorities said.

24.   While treating the patients, doctors and nurses were able to smell the gases intermittently.

25.   Matsumoto residents called ambulances late Monday night, saying they smelled gas and felt sick.

26.   Matsumoto was thrown into a state of panic late Monday, with citizens in a residential area calling ambulances, saying they smelled gas and felt sick.

27.   Residents had smelled gas and alerted Taegu Urban Gas Co. officials to possible gas leaks hours before the explosion, but their warnings had fallen on deaf ears.

28.   Schenk said divers were able to smell gas on the surface but until now the leak had been confined to under the water, limiting the risk of explosion.