Industrial pollution is probably more common than most people realize. I've lived Denver, Pittsburgh and Tampa and you can always catch smells depending on wha

Industrial pollution is probably more common than most people realize. I've lived Denver, Pittsburgh and Tampa and you can always catch smells depending on what part of the city you're in. I just saw this article on Colorado Public Radio today. https://www.cpr.org/2020/01/06/why-denver-sometimes-smells-like-mothballs-and-other-unpleasant-things/ https://www.cpr.org/2020/01/06/why-denver-sometimes-smells-l...