As a machinist, when we put items away we would use an oil or grease with Lithium. LPS or similar; for some reason, it prevents rusting. WD-products do not do the job long term.
Is there a health hazard here? Long report from Environmental Chemistry.com:
Periodic Table of Elements: Lithium - Li (EnvironmentalChemistry.com)
Short Form..no
~Richard
Post: There was a thread by a person that placed his blade collection in a safe deposit box and when retrieved, he had lost over half the value due to corrosion.