The users of masks include:

1. Medical professionals: Doctors, nurses, and healthcare workers wear masks to prevent the spread of infections and airborne pathogens.

2. Patients: People with respiratory issues, undergoing surgery, or with compromised immune systems wear masks for protection.

3. First responders: Paramedics, firefighters, and emergency personnel wear masks for protection from airborne pathogens and debris.

4. Industrial workers: Construction workers, factory workers, and others wear masks to protect themselves from dust, chemicals, and pollutants.

5. Artists and performers: Actors, musicians, and dancers wear masks for creative expression, disguise, or to conceal their identity.

6. Festival-goers: Participants in festivals like Carnival, Mardi Gras, and masquerade balls wear masks as part of the celebration.

7. Protesters and activists: Some individuals wear masks to conceal their identity during political protests or demonstrations.