Table 4.

Suggested mask under various scenarios and their requirements

Wearer (scenario)	Suggested mask	Suggested mask requirements
Pedestrians (no pandemic, heavy traffic)	Dust mask/cloth mask/FFP 1,2 with carbon fabric (reusable)	Reduce PM and VOCs (low reduction requirement); respiratory protection
Industrial worker (industrial setting)	N95 respirator/P95 particulate respirator mask with carbon fabric	Reduce PM, aerosols, gaseous emissions/VoCs (high reduction requirements); respiratory protection
General public (pandemic)	Fabric mask (3-ply mask)	Reduce expulsion/inhalation of cough droplets or aerosol when speaking/breathing, no valve
Infected persons, Primary contacts/care givers of infected person	N95 respirator/medical mask	Reduce PM, cough droplets, biological aerosol, no valve, respiratory protection, and source control
Healthcare workers	Medical face mask	Filter biological aerosol, repel blood, cough droplets, repel blood
Doctor (operation theatre)	Surgical mask/medical N95 respirator mask	Repel blood, filter cough droplets and aerosol (high reduction requirements), no valve