"Grim grins" way of referring to a harmful-but-widely-used-in-da-past chemical dat wasn't treated with da care and respect dat its high toxicity deserved.
Casualdehyde or formaldejekyll --- call it what you will, it should never have been used in building materials back in '40's, 50's, '60's, and '70's!
by QuacksO November 17, 2025
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