Observations:
Most health related problems in countries like India are related to dirty and contaminated water. Take care of your water and food intake and most diseases would not be nearby you.
Take boiled water
Boiled food
and most infections would not be nearby you.
If possible, especially in conditions like now a days then boil water before use in most daily purpose use.
Rather than air, water is the source of more infections in countries like ours.
Most of the deaths as far as I know are not by infection by air or any virus but other reasons including water infections.
