Are you arguing that smoke is harmless? I feel like I’m taking crazy pills. No one would cook meat with car exhaust and expect it to be safe. Burning charcoal or wood to cook meat using pure smoke cannot possibly be harmless.
Put it this way - smoke is clearly bad for you and proven to cause cancer. I believe what I eat is absorbed by my body and can affect it, like medicine affects my body when absorbed. Therefore I think it’s fairly likely that eating a lot of food infused with smoke and carcinogens is a strong risk. It would be quite odd if it turned out smoke-food had absolutely 0% effect on your body, and especially making it a routine piece of food you eat would be worse than a “once in a while” thing.
So that’s my point - if you think smoke is bad for your lungs, it’s probably bad for your colon too!