Related by context. Frequent words. (Click for all words.) 55 belching smoke 54 smoke belching 53 smokestacks 51 sooty 51 belching smokestacks 51 belching 50 soot stained 49 Rusting 48 smog forming pollutants 47 exhaust fumes 47 Decaying 46 grimy 46 Burning fossil fuels 46 noxious 46 billowing clouds 46 diesel fumes 45 smokestack 45 polluting 45 braziers 45 pump jacks 45 belch 45 Propane tanks 45 rusting 45 oil derricks 44 lightless 44 polution 44 Nitrogen oxides 44 tailpipes 44 belched 44 blaring horns 44 chimney stacks 43 whooshing 43 diesel exhaust 43 tank treads 43 unbreathable 43 corrosive acid 43 bug zapper 43 befouling 43 sulfurous 43 Poorly maintained 43 noxious fumes 43 emmissions 43 dripping faucet 43 horseless carriages 42 Diesel exhaust 42 gas guzzling 42 Polluting 42 florescent light 42 cow patties 42 colorfully painted 42 noxious gases 42 tailpipe 42 shuttered storefronts 42 flaming 42 Spewing 42 buzz saws 42 soot 42 exhaust pipes 42 overpowering smell 42 welding torches 42 pollutes 42 sky scrapers 42 muddy puddles 42 tree huggers 42 whooshes 42 revving engines 42 thrumming 41 Fill er 41 underbellies 41 belches 41 rusted metal 41 putrefying 41 pollute 41 decaying 41 Snaking 41 Rumbling 41 smelly 41 spontaneously combust 41 acrid odor 41 bottomless pits 41 smog choked 41 gaslights 41 brick ovens 41 garbage heaps 41 Emitting 41 burning 41 pollution 41 smokestack industries 41 deathtraps 41 gloop 41 stinky 41 industrialism 41 birds chirp 40 gray haze 40 wraiths 40 particulate filters 40 Pungent 40 hunkering 40 Overheated 40 ashy 40 pollutants emitted