20 individuals at Kuala Lumpur airport experienced dizziness and nausea due to a methyl mercaptan gas leak at a nearby aircraft engineering facility.

20 people at Malaysia's Kuala Lumpur international airport were affected by a gas leak at an aircraft engineering facility, resulting in dizziness and nausea. The incident occurred at the Southern Support Zone Sepang Aircraft Engineering facility and did not disrupt airport operations. The leaked gas was identified as methyl mercaptan, and the source was an "unused tank" at the facility.