Sturdy and stackable

I bought five, drilled drainage holes in 4, and am planning on using them as stacked sprouting for fodder. I like the product a lot so far, but I am concerned about the strong chemical smell. Other posts say it goes away. I am waiting to see. Anybody know if the smell is typical for polypropylene? What am I smelling? How does this off gassing interact with food safety?

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