For example... Mary gets cancer at age 67. She never smoked, but did meet a guy in a bar for a drink once when she was 25. The bar had allowed smoking in their facility until 2 years prior to her 45 minute visit, but hadn't completely scrubbed the walls/ceilings after their smoking ban went into effect.
Since Mary contracted cancer later in life... they can now count her case as "smoking related" since she entered that bar which likely still had some residue laying around.
The more they stretch the facts, the higher the numbers get... which in turn allows them to count even more cancer cases as "smoking related"... which again helps them count even more people in the results.
Another example of “xxx related inuries”. My mom was carrying an unopened bottle of wine and slipped and fell shattering the bottle and severely cutting the palm of her hand requiring a trip to the ER and a lot of stitches. Voila! Alcohol related injury?