Related by context. Frequent words. (Click for all words.) 74 bronchitis asthma 72 aggravate asthma 72 asthma bronchitis 71 asthma chronic bronchitis 70 lung irritant 68 bronchitis pneumonia 68 respiratory irritant 67 coughing shortness 66 coughing wheezing 65 diarrhea cramps nausea 64 wheezing shortness 64 Volatile organic compounds 63 asthma emphysema 63 Nitrogen oxide 63 chronic bronchitis emphysema 62 headaches dizziness nausea 62 Diesel exhaust 62 bronchial infections 62 Particulates 62 pneumonia bronchitis 62 smog acid 61 convulsions coma 61 Nitrogen oxides 61 Prolonged exposure 61 mercury sulfur dioxide 61 Nitrogen dioxide 60 animal dander 60 dehydration abdominal pain 59 mold fungi 59 lung cancer mesothelioma 59 Particle pollution 59 Hydrogen sulfide 59 runny nose sore throat 59 breath wheezing 59 airway constriction 59 diesel particulates 59 asthma allergies 59 postnasal drip 59 cramps heat exhaustion 59 pulmonary disorders 58 lung cancer emphysema 58 headache nausea vomiting 58 post nasal drip 58 chronic obstructive lung 58 fatigue shortness 58 carbon disulfide 57 Viral infections 57 smoker inhales 57 wheezing coughing 57 nausea constipation 57 arterial infections endocarditis 57 between Lefferts Blvd 57 Pulmonary hypertension 56 Prenatal exposure 56 excess mucus 56 Chronic inflammation 56 headache sore throat 56 Volatile Organic Compounds 56 Nausea vomiting 56 angina chest 56 scratchy throats 56 Inhaling 56 diarrhea stomach cramps 56 pulmonary emphysema 56 airborne particulate matter 56 trigger allergic reactions 56 dizziness fatigue 56 meningitis encephalitis 56 methemoglobinemia 56 colorless odorless tasteless 56 nausea vomiting diarrhea abdominal 55 Acid reflux 55 arthritis gout 55 neck stiffness disorientation 55 Asthma sufferers 55 uremia 55 air pollution 55 autoimmune disorders asthma 55 sore throat cough 55 sulfur dioxide nitrogen oxides 55 respiratory illnesses 55 Particulate matter 55 paralysis coma 55 throat irritation 55 soft whitish 54 encephalitis meningitis 54 respiratory 54 secondhand cigarette 54 silica dust 54 headache muscle aches 54 cerebral palsy blindness 54 lung diseases 54 constipation diarrhea 54 diarrhea constipation 54 gastric reflux 54 osteoporosis arthritis 54 mental retardation cerebral palsy 54 cardiovascular disease hypertension 54 Sulfur dioxide 54 abdominal pain diarrhea 54 Cigarette smoke