What is the greatest potential airborne health risk when removing glue-down carpet from older tile or resilient flooring that cracks or breaks?

When removing glue-down carpet from older tile or resilient flooring, the greatest potential airborne health risk is asbestos. This is particularly relevant in buildings constructed before the 1980s, as asbestos was commonly used in various materials including flooring and adhesives. When these materials deteriorate, they can release asbestos fibers into the air, posing significant health risks, including lung cancer and asbestosis, when inhaled.

While lead, silica dust, and formaldehyde present their own health concerns, they are less likely to be a risk specifically associated with the removal of older flooring materials. Lead often comes from painted surfaces and plumbing, silica dust is typically a concern with activities involving concrete and masonry, and formaldehyde is commonly found in certain types of pressed wood products and some adhesives. Therefore, in the context of the question, asbestos represents the most significant airborne health risk tied specifically to older flooring materials.