Related by context. Frequent words. (Click for all words.) 69 secondhand smoke 65 smoke 58 passive smoking 54 carcinogens 54 soot 53 fumes 53 nicotine 52 cigarette smoking 51 smoky 51 smoking 51 particulates 50 smell 50 toxins 49 nonsmokers 49 odors 48 toxic fumes 48 carcinogen 48 pollutants 48 vapors 47 particulate matter 47 harmful chemicals 47 haze 47 inhale 47 inhaling 46 noxious 46 odor 46 nonsmoking 46 ultraviolet radiation 46 aroma 45 toxic chemicals 45 stench 45 Smoke 45 smog 45 smells 45 UV rays 45 carbon monoxide 45 dust 45 inhaled 45 smoker 45 smokers 45 carcinogenic 44 air pollution 44 water vapor 44 allergens 43 VOCs 43 harmful effects 43 cigarette butts 43 volatile organic compounds 42 smoked 42 wheezing 42 dust particles 42 emitted 42 pollutant 42 wafting 41 vapor 41 banning smoking 41 mucus 41 particulate 40 smokes 40 smoking bans 40 condensation 40 aromas 40 Smoking 40 lungs 40 aerosols 40 smoking ban 40 oxidative stress 40 mist 39 asbestos exposure 39 contaminants 39 pollution 39 allergen 39 droppings 39 asbestos 39 huffing 39 formaldehyde 39 toxic substances 39 radon 39 puff 39 fume 39 solvents 39 benzene 38 belching 38 emphysema 38 smelly 38 puffing 38 chemicals 38 smelling 38 exhaled 38 saliva 38 sulfur dioxide 38 PFOA 38 dioxins 38 volcanic ash 37 germs 37 cigarette 37 hydrogen sulfide 37 respiratory illnesses 37 perspiration 37 ash 37 asthmatic