1. The acrid smell of sewage lingered in the stagnant air like smoke. 2. The warm, stagnant air present within the twinwall cells can present problems. 3. Stagnant air intensifies the odors of sweat and dirty clothes.4. Normally, carbon monoxide levels build gradually, fueled by vehicle exhaust trapped in stagnant air . 5. -- " Orchids will not grow in stagnant air ." 6. In places with stagnant air , such as basements, molds can produce a strong musty odor. 7. The conditions were exacerbated by 100-degree heat, stagnant air and drifting smoke from wildfires, Dalley said. 8. Sunlight and stagnant air are needed for the air pollutants that create ground-level ozone to react. 9. Stagnant air , stuffiness and odors are also clues.10. The reactions are enhanced in the presence of sunlight, high relative humidity, and stagnant air flow.
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