If you read your link, it referred to inhaling large quantities, such as when mechanics pour a bunch on the floor to clean up large spills several times a day without masks. You’re not doing that here whereas if you’re cooking on a UDS regularly without a deflector and so the fat is dripping on the coals, you are exposing yourself to cancer causing substances every time you cook.
Bottom line: It’s such a SLIGHT increase in cancer risk as to be almost neglible in either case above, much as the overblown studies a few months ago that screamed “red meat causes cancer” (further in-depth reading revealed less than a 0.5% increased risk, as I recall). You’re in the wrong hobby if you worry about that kind of stuff.
