Is it advisable to fit a respirator so that air can leak in around the face?

Fitting a respirator so that air can leak in around the face is not advisable because it significantly reduces the effectiveness of the respirator in providing protection. Respirators are designed to form a tight seal around the face to prevent contaminated air from entering. If air is allowed to leak in, it compromises the filtering capabilities of the respirator, exposing the wearer to harmful airborne particles, gases, or vapors.

A proper fit ensures that the respirator performs as intended, filtering out pollutants and ensuring that the air you breathe is clean and safe. This is critical in environments where exposure to hazardous substances is a concern. Maintaining a proper seal is essential for both the safety of the user and compliance with health and safety regulations regarding respiratory protection.