回复：十分感谢各位的回复。每次有问题在这里提问后，都有很多

I know nothing can bring your love back. I am sorry for your loss.
Let me answer your concern subjectively:
- saran wrap is polyethylene 聚乙烯. I have never seen any implication of polyethylene in cancer. It is a rather safe material
- zip-lock type sandwich bag is also made with polyethylene resin. If you follow instruction, it should be safe. I will double check with manufacturer on this.
- i mentioned a type of PVC 聚氯乙烯type plastic wrap that is toxic. I think we see this type on some wal-mart merchandise, but not foods.
- you are right about cancer taking many years to form. Most expert estimates put it 10+ years. Only in mouse you can induce cancer within 1-2 years.
- tracing the cause of cancer is about educating the living and protecting the next generations, it is never about placing blame on any family member...

Please live well and live healthy. God bless!