Are indoor air quality standards necessary?

The article questions whether there should be a set of standards to manage indoor air quality standards as people spend significant amounts of time within indoor areas. Having such standards particularly in public spaces will greatly benefit public health, however the article outlines the five main challenges which will need to be considered in the creation of these standards. See further here: https://airqualitynews.com/headlines/calls-for-indoor-air-quality-standards-to-be-introduced-worldwide/