Smoked meats have high levels of carcinogens. The carcinogens are created when food cooks at a high temp. For smoking, in particular, they are created when fat drips on to the heat source and then the resulting carcinogens end up in the meat [0].
Cured meats contain nitrates or nitrites, both of which have been associated with an increased risk of cancer.
0: https://health.clevelandclinic.org/is-smoked-meat-bad-for-yo...
