Obviously I'm using the word chemical in the colloquial sense, as in an unnatural, lab produced substance. And while I don't necessarily condone smoking, at least habitually, it's relatively harmless compared to most of the crap most people eat.
I see what you are doing here and I encourage you to bring your idea of an "all-natural" gun lube to fruition. I am sure there are people who will buy it and you may make lots of money. Good luck.
Smoking is way worse for you than eating any food that you could find in a normal, American supermarket. You are wrong. Smoking WILL give you cancer it you do it long enough. The best thing that one can do for one's health is to quit smoking.
With regard to all these "studies" that you reference about everything being bad, toxic, and cancer causing: Always consider the source of the information. It has been my experience that when somebody tells you that something is bad for you, they are usually trying to sell you something else.
"Traditional gun lube is filled with toxic, cancer causing ingredients that I cannot pronounce and, as studies have shown, your body has no idea what to do with them. Instead, buy my all-natural, organic, eco-friendly holistic lube! Your guns, and your body, will thank you.", for example.
Good luck. You'll probably make millions on the backs of gullible, uniformed consumers. And I can respect that.