[5] The damage did not «arise out of» cleaning itself, because the contractor's employees chose to undertake their cleaning operations in the midst of airborne debris. (theallgrouponlinejournal.com)
These ultra-fine particles are much more dangerous than larger particles, as the lungs have difficulty filtering the microscopic airborne debris. (twinmom.com)
These filters collect airborne debris and allergens. (moneysense.ca)