Several factors can contribute to contamination in cleanrooms. Poor gowning practices, such as incorrect donning or doffing of PPE, can introduce particles into controlled environments. Airborne contaminants, including dust, microbes, and skin cells, pose a significant risk to product integrity. PPE integrity issues, such as tears, punctures, or improper fit, can also lead to contamination. Additionally, improper handling of materials and unprotected surfaces may introduce particulates that compromise cleanroom standards.