Question

any idea to prevent air pollution in a colony

Answer 1

Here are some simple steps you can take:

Avoid smoking indoors (quitting smoking is the best answer for overall health)Use craft supplies in well-ventilated areas.Make sure your gas stove is well-ventilated.Minimize clutter.Remove carpeting if possible.Use a dehumidifier and/or air conditioner to reduce moisture.

Answer 2

reduce the use of bikes cars etc
do not burn plastic
do not burn leaves