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2. Chemical toilet - Wikipedia

   en.wikipedia.org/wiki/Chemical_toilet

   Most include lockable doors, ventilation near the top, and a vent pipe for the holding tank. When wind is blowing over the vent pipe it creates a low pressure area sucking the odor out. Leaving the toilet lid open will reverse the flow of the venting of the tank. Typical specifications: Total Weight: 90–110 kg (200–240 lb)

3. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.

4. Kitchen exhaust cleaning - Wikipedia

   en.wikipedia.org/wiki/Kitchen_exhaust_cleaning

   Kitchen exhaust cleaning (often referred to as hood cleaning) is the process of removing grease that has accumulated inside the ducts, hoods, fans and vents of exhaust systems of commercial kitchens. Left uncleaned, kitchen exhaust systems eventually accumulate enough grease to become a fire hazard.

5. Around the house: Clogged dryer vents are extremely dangerous

   www.aol.com/news/around-house-clogged-dryer...

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6. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Indoor air quality - Wikipedia

   en.wikipedia.org/wiki/Indoor_air_quality

   For health reasons it is crucial to breathe clean air, free from chemicals and toxicants as much as possible. It is estimated that humans spend approximately 90% of their lifetime indoors [8] and that indoor air pollution in some places can be much worse than that of the ambient air.