Doubt it. Same group in the USA probably picked up the practices of using indoor toilets and washing their hands, at least to enough of a degree to affect the odds.
Urban Indians didn’t have that problem, but it should be pointed out that smoking is frowned upon in public in most US cities’ social establishments and in society as a whole these days, unlike India. And, as opposed to Indian city air, Houston’s level of pollution is faaaaaaar less and therefore less damaging to lung function.