What odor control principle involves preventing odor from escaping into the environment?

Sealing is indeed the principle that focuses on preventing odor from escaping into the environment. This method involves creating barriers that contain odors, thereby stopping them from permeating surrounding areas. This is particularly important in settings where offensive smells can lead to occupant discomfort or health concerns.

In the context of odor control, this approach is essential because it not only helps to mitigate the immediate issue of odors but also supports maintaining a healthy indoor environment, by reducing the potential for respiratory issues and other health hazards associated with airborne contaminants. Sealing can be done through various means, such as applying sealants to porous surfaces or using physical barriers.

In contrast, masking relies on fragrances to cover up unpleasant odors, which does not eliminate the root cause of the odor, nor does it prevent it from escaping. Ventilating involves increasing airflow to dissipate odors, and filtering uses mechanical means to capture particles and odors from the air; however, these approaches do not directly contain odors in a manner as effective as sealing.