Related by context. Frequent words. (Click for all words.) 57 belching smoke 56 belching 54 belched 53 belch 51 billowing clouds 51 sooty 50 Soot 50 soot 50 emitted 50 emitting 49 noxious 49 sulphurous 49 acrid 49 smoke belching 48 belches 47 cigarette smoke 47 noxious gases 47 billowing 47 sulfuric 47 smoke plumes 47 exhaust fumes 47 Inhaling 46 billowing cloud 46 blackens 46 sulfurous 46 vaporised 46 Thick clouds 46 haze 45 exhalations 45 fug 45 smokestacks 45 smoke 45 cordite 45 diesel fumes 45 Prolonged exposure 45 billows 45 acrid smoke 44 sulfur dioxide nitrogen oxides 44 wafting 44 Spewing 44 swooshing 44 pollutants emitted 44 Cigarette smoke 44 acrid smell 44 gases emitted 44 Sulfur dioxide 44 pollution 44 ashy 44 smoke wafted 44 inky 44 Polluting 44 gray haze 44 incomplete combustion 44 nitrous oxides 44 polluting 44 billow 44 wreathed 43 pollutions 43 palls 43 spewing 43 sulfur dioxide nitrogen oxide 43 pollutes 43 sulphates 43 ionised 43 emit 43 silica dust 43 purple haze 43 wisps 43 mist 43 billowing smoke 43 co2 43 soot particles 43 combusting 43 dust 42 volcano erupting 42 dioxide 42 inhaling 42 odiferous 42 steam vents 42 dirties 42 overpowering smell 42 heavily polluted 42 wafts 42 Indonesian volcano erupts 42 Particulate matter 42 pollute 42 Plumes 42 putrid smell 42 exhales 42 spew 42 emits 42 vapor 42 plumes 41 vaporous 41 spews 41 sulfur oxide 41 spewed ash 41 poisonous fumes 41 particulates 41 sulfur oxides 41 polluted