Tobacco Smoke PollutionSmokeSmokingCotinineEnvironmental ExposureRisk FactorsQuestionnairesImmunization, PassiveTobaccoNicotineSmoking CessationAir Pollution, IndoorPlants, ToxicTarsPassive Cutaneous AnaphylaxisCarboxyhemoglobinLungCase-Control StudiesFiresRestaurantsLung NeoplasmsTobacco ProductsMotion Therapy, Continuous PassiveInhalation ExposurePulmonary Disease, Chronic ObstructiveAminobiphenyl CompoundsForced Expiratory VolumeBronchiOccupational ExposureTime FactorsPulmonary EmphysemaCross-Sectional StudiesAcroleinVital CapacityNitrosaminesPolycyclic Hydrocarbons, AromaticCarbon MonoxideAir PollutantsBiological MarkersDNA AdductsSaliva