Which once-popular building product was banned in most countries after being linked to serious health hazards, despite being widely used in architecture throughout the 20th century?

Test your knowledge about notable product failures in architecture and construction! Some architectural innovations and building materials that were once hailed as revolutionary ended up becoming infamous failures. This poll explores one such noteworthy case that changed industry standards and practices. Do you know your architectural product history?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Asbestos insulation
Lead-based paint
Polyurethane foam insulation
Aluminum wiring