India's health ministry says hundreds of thousands of people who have never smoked die each year by inhaling smoke from other people's cigarettes and bidis (small hand-rolled cigarettes common in India).
"From 2 October India is going to go smoke-free in all public places," Mr Ramadoss said.
"The aim is to discourage the smokers, to make them quit or reduce smoking. Also all non-smoking employees have a right to a 100% smoke-free atmosphere.
"The perils of passive smoking are equally bad."
Health experts say passive smoking contains more than 4,000 chemicals and exposure can cause lung cancer, heart disease, bronchitis and asthma.
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