My suggestions are:
first of all stop fighting with industries,not only they emit poisonous gases
next most of the contributions in pollution is due to smoke emitted by pollution
to reduce pollution we need to stop using own vehicles  and use public transport
for every 6 months pollution check up in all the smoke emitting things is compulsory
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My suggestions are:
1)Industries must be far from the people living areas
2)Afforestation(as trees helps us in many ways)
3)Reducing the usage of polluting things(plastic covers)