nˈoʊt ðæt ɛkspˈoʊʒɚ tə smˈoʊk æt ðə sˈeɪm tˈaɪm æz ɹˈeɪdɑːn ænd ɹˈeɪdɑːn dˈɔːɾɚz wɪl ɪŋkɹˈiːs ðə hˈɑːɹmfəl ɪfˈɛkt ʌvðə ɹˈeɪdɑːn.
Note that exposure to smoke at the same time as radon and radon daughters will increase the harmful effect of the radon.