Construction workers do not wear cloth facemasks like people are mandated to wear

not what commenter referring to. Demoltion/salvage crews wear masks. Drywall crews mask up during sanding. Painters sometimes do. Crews blowing insulation into attics will. Fire/enviro damage clean-up crews wear masks regularly.

There's a handful of trades that regularly wear masks for 1-12+ hours at a shot. Within those trades, there should be a higher incidence of bacterial lung/airway infections if masks are petri dishes.