A Skid Row day-care center was evacuated and streets in downtown Los Angeles clogged with traffic when 30 gallons of ammonia spilled from a refrigeration tank Tuesday afternoon, city Fire

Department officials said. The leak occurred about 5 p.m. from a malfunctioning tank belonging to Youngs Market Co. in the 600 block of Gladys Avenue. Most of the liquid became gas and

dissipated into the air, officials said. But a nose-wrinkling odor enveloped two Skid Row blocks, leading school officials to evacuate 25 children from the Para Los Ninos day-care center.

“The smell got so strong, just like a big laundry,” said day-care center worker Wendy Sanchez. Fire officials said no one was injured. Police blocked off 5th and 6th streets while