Related by context. Frequent words. (Click for all words.) 57 inhale 54 tobacco specific nitrosamines 52 Inhaling 49 inhaled 49 inhaling 48 cotinine levels 48 harmful effects 48 inhalations 48 NNAL 48 metabolize alcohol 48 harmful 47 Chewing tobacco 47 nitrosamines 47 nicotine 47 toxicants 46 particulates 46 metabolise 46 detectible 46 secondhand tobacco 46 smokers 46 TSNAs 45 menthol cigarette 45 cigarette smokers 45 cotinine 45 Prolonged exposure 45 metabolizes 45 cigarette smoke 44 NNK 44 respiratory irritant 44 carcinogens 44 Diesel exhaust 44 psychotic illnesses 44 smoked 44 respiratory tracts 44 nonsmokers 44 vasodilators 44 toxic pollutant 44 incomplete combustion 44 Cigarette smoke 43 harmful chemicals 43 nondrinkers 43 dehydrates 43 nitrous oxides 43 smoke 43 detoxifies 43 nitrogen oxides NOx 43 Tobacco Smoke 43 cigarette smoking 43 Passive smoking 43 oropharyngeal cancer 43 polybrominated diphenyl ethers 43 secondhand smoke 43 catechin 42 asthma bronchitis 42 harmful toxins 42 Asthmatics 42 halogenated 42 airborne allergens 42 artificially sweetened 42 arsenic mercury 42 vaginal secretions 42 inhales 42 inhalants 42 exhaling 42 fluorides 42 secondhand smoke exposure 42 Inhalants 42 e cigs 42 trigger allergic reactions 42 decaffeinated coffee 42 aromatic compounds 41 passive smoking 41 suppresses appetite 41 tea drinkers 41 prenatal exposure 41 phytoestrogen 41 smoking 41 inhaling smoke 41 Nitrogen oxides 41 addictive substances 41 freshening breath 41 misperceive 41 tetrahydrocannabinol THC 41 toxic byproducts 41 metabolised 41 metabolize 41 aggravate asthma 41 neurotoxic effects 41 brain lesions 41 harmfulness 41 exhaled 41 caloric sweeteners 41 fine particulates 41 combustion gases 41 hormone disrupting 41 Seed Poultry 41 VOCs 41 bioaccumulation 41 menthol 41 Secondhand smoke 41 body metabolizes