Which architectural product was widely adopted in the 1970s for its fire-resistant properties but was later banned due to severe health hazards?

The architectural world has seen its share of innovative products that promised to revolutionize building design but ultimately failed in practical application. These failures often provide valuable lessons for architects and designers about the gap between theoretical design and real-world implementation. Test your knowledge about one of the most notable product failures that affected architectural practices worldwide.

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Asbestos insulation
Urea-formaldehyde foam insulation
Polyurethane spray foam
Lead-based architectural coatings