Related by context. Frequent words. (Click for all words.) 64 wood burners 60 wood stoves 58 woodstoves 57 wood burning stoves 55 wood boilers 54 fireplace inserts 54 unvented 52 stoves 52 boilers 51 cook stoves 51 pellet stoves 50 aggravate asthma 50 Burning fossil fuels 50 patio heaters 50 furnaces 50 particulate emissions 50 outdoor fireplaces 50 fireplaces 50 sulfur dioxide nitrogen oxide 50 air pollution 49 respiratory irritant 49 dryer vents 49 Carbon monoxide detectors 49 cooking stoves 49 nitrous oxides 49 particulate matter emissions 48 flow plumbing fixtures 48 biomass boilers 48 compound VOC 48 compact fluorescent lighting 48 Diesel exhaust 48 burning fireplaces 48 foggers 48 turkey fryers 47 asthma bronchitis 47 pollutants emitted 47 bathrooms kitchens 47 sulfur oxide 47 pollutant 47 CO detectors 47 charcoal grills 47 fine particulate 47 firepits 47 noncombustible 47 charcoal briquettes 46 pellet stove 46 emit CO2 46 pet dander 46 Nitrogen oxides 46 HEPA filters 46 VOCs 46 cookstoves 45 Fireplaces 45 VOC emissions 45 methylene chloride 45 air conditioners refrigerators 45 biomass fuels 45 kerosene lanterns 45 fine particulates 45 wood stove 45 pollution 45 incomplete combustion 45 Drengenberg 45 polybrominated diphenyl ethers 45 waste incinerators 45 diazinon 44 woodpiles 44 sulfur dioxide nitrogen oxides 44 combustion 44 nonflammable 44 dual flush toilets 44 animal dander 44 humid climates 44 nuisance alarms 44 pollutants 44 low flow showerheads 44 nitrogen oxide NOx 44 nitrogen oxides NOx 44 furans 44 asthma emphysema 44 hydronic 44 emmissions 44 Environmentally friendly 44 particulates 44 properly ventilated 44 compact fluorescent lights 44 composting toilets 44 phosphine 44 Dust mites 44 VOC paint 43 retardants 43 fumigants 43 incinerators 43 smog forming 43 install scrubbers 43 evaporative emissions 43 mercury emissions 43 wood pellets 43 sulfur dioxide 43 Hydrogen sulfide 43 mold fungi