Related by context. Frequent words. (Click for all words.) 57 Diesel exhaust 56 asthma bronchitis 56 air pollution 56 smoggy 55 coughing wheezing 55 pneumonia bronchitis 53 Nitrogen oxides 53 aggravate asthma 53 respiratory irritant 52 indoor allergens 52 particulate pollution 51 Particulates 51 Dust mites 51 particulates 51 temperature inversions 51 fine particulate 51 fine particulates 51 Particulate matter 51 pollutants 50 nitrous oxides 50 Sulfur dioxide 50 ozone smog 50 mold fungi 50 airborne allergens 50 silica dust 50 ultrafine particles 50 smog 49 Cigarette smoke 49 Hydrogen sulfide 49 trigger allergic reactions 49 pollutants emitted 49 animal dander 49 particulate matter 49 post nasal drip 48 pulmonary disorders 48 pollution 48 airborne particles 48 unpleasant smell 48 gases emitted 48 asthma eczema 48 helping solve unsolvable 48 chronic sinus 47 particles emitted 47 fine particle pollution 47 circulatory diseases 47 asthma sufferers 47 asthma allergies 47 chronic respiratory 47 Passive smoking 47 exceedances 47 sulfur dioxide SO2 47 VOCs 47 smoggiest 47 wheezing coughing 47 Genital warts 47 PM#.# 46 asthmatics 46 Salmonellosis 46 comments regarding www.miningjournal.net 46 particle pollution 46 Genital herpes 46 Pollutants 46 particulate matter PM 46 runny nose sore throat 46 sulfur dioxide 46 pollen allergies 46 soot particles 46 Allergic rhinitis 46 Peanut allergy 46 secondhand tobacco 46 airborne pollutants 46 Peanut allergies 46 scratchy throats 46 pollutant 46 pet dander 46 carbon tetrachloride 46 diesel particulate matter 46 fatigue shortness 46 sulfur hexafluoride 46 toxic pollutant 45 respiratory illnesses 45 asthma emphysema 45 smog forming 45 airborne contaminants 45 smog forming pollutants 45 constipation diarrhea 45 volatile organic compounds 45 sulfur dioxide nitrogen oxides 45 soot pollution 45 ozone pollution 45 Prolonged exposure 45 mold spores 45 sulfur dioxide nitrogen oxide 45 spewed ash 45 ozone concentrations 45 eye irritations 45 creosote buildup 45 fine particulate matter 45 water vapor 45 secondhand smoke 45 polycyclic aromatic hydrocarbons PAHs