We think that almost everybody will agree that a majority of our life is likely to be spent indoors. But most people don’t know that most indoor places, they are likely to spend their time, can have a worse air quality index than outdoor places. Let’s talk about some of the indoor places which are likely to have a very poor air quality index.


Most malls are older buildings with poor ventilation systems and Heating, ventilation, and air conditioning (HVAC) systems that are badly maintained. That’s why malls have a lot of stale air with high carbon dioxide levels.


Office Buildings

Dust, humidity, and poor ventilation are common in most office buildings. They can also have stale air and sick co-workers, which can lead to them having a very poor air quality index.



Most of the schools are in decades-old buildings with poor ventilation and HVAC systems. Airborne pollutants are also common in schools as shared ventilation systems spread pollutants and pathogens from classroom to classroom and student to student.


Apartment Buildings

Apartment buildings typically have few windows, which means poor ventilation in the building. Shared HVAC systems also transfer pollutants from apartment to apartment. In other words, neighbors are typically breathing the same air. In addition to that, shared hallways and trash areas can also spread pollutants.


Restaurants and Bars

 When a restaurant has inadequate ventilation, fumes from the kitchen can make their way into the dining area. In the case of bars, smoke from cigarettes can become trapped in the furniture and carpets, exposing you to pollutants from cigarettes even when no one is smoking.


Doctor’s clinics

 What are the waiting rooms full of? Sick people! Airborne pathogens are common in waiting rooms. Additionally, the air quality in doctor offices can be affected by gasses released by medical machinery and office equipment.

Metro Stations

People who use metro trains to commute to work each day are usually exposed to pollutants carried by ventilation systems and other passengers.


Train Stations

Many commuters take trains, and most stations have a lobby where you wait before departing. The air quality inside these stations and waiting areas is often at harmful levels. You are exposed to diesel emissions which can contain nitrogen oxide, carbon dioxide, carbon monoxide, soot, and several other harmful pollutants.


But don’t worry there is an easy solution to save you from the harmful effects of pollution. Whenever you are at one of these places, just breathe in 99% pure oxygen from a portable can of gO2 therapy and fight the harmful effects of polluted air in just a few puffs.

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