That's a myth, sumo. It has mineral oil and other ingredients. The MSDS does not indicate that it is particularly toxic. You're not going to ingest much from a film on a knife blade.

Ingestion: This product has low oral toxicity. Swallowing may cause gastrointestinal irritation, nausea, vomiting and diarrhea. This product is an aspiration hazard. If swallowed, can enter the lungs and may cause chemical pneumonitis, severe lung damage and death.

WD-40 and duct tape are home survival essentials. <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />