Old attic insulation can hurt indoor air quality when it becomes wet, deteriorated, or contaminated

https://cristianvdva623.swiftnestly.com/posts/how-much-does-attic-decontamination-cost-in-escondido-3

Old attic insulation can hurt indoor air quality when it becomes wet, deteriorated, or contaminated, allowing biological pollutants and allergens to linger indoors.