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Exposure to tobacco smoke The final part of this article looks at the issue of exposure to tobacco smoke indoors, for example being in a room where other people are smoking or have smoked

Take slow, deep breaths, hold for a few seconds, and exhale slowly

"Sub-500 nm (nanometre) particle concentrations were (about) 20 per cent higher in HC than in TC," they said and added that the fine particles are increasingly linked to cardiovascular and respiratory disease

The state has one of the highest smoking rates among adults in the country: 17.1%, compared to the national rate of 11.5%, according to the American Cancer Society