The FDA also said the plant had a leaky roof, poor ventilation and inadequate pest control.

WSJ: Ex-Owner of Peanut-Butter Firm Indicted Over Salmonella

Converting bunkers poses challenges: Few windows mean little natural light, poor ventilation and dampness.

WSJ: New Lives for Nazi-Era Bunkers

In Cambodia, mass-fainting incidents, in which large groups of workers faint within a short period, have raised concerns about worker malnutrition, excessive heat and poor ventilation of factories.

WSJ: Apparel Retailers Confront Tough Options

Activists say they believe the incidents are caused by heat, bad ventilation and poor nutrition.

WSJ: Another Cambodian Garment Factory Has Accident

Ventilation was poor and hallways were dim.

NEWYORKER: Groupthink

Some of the schools the ventilation is so poor it can make students sick.

WHITEHOUSE: President Obama on how the American Jobs Act will Modernize America��s Schools | The White House