Please educate yourself before you start talking about what is illegal under the Health and Safety Act.

"PPE recommended by public health guidance to stop the spread of COVID-19

The pandemic has meant that PPE is also being used in a number of new settings as a way to stop people spreading illness to others. This includes:

• business and services using PPE to manage the risk of COVID-19 transmission, and
• people using face coverings for everyday activities when outside their home.

Using PPE in both settings supports the public health response to COVID-19, but isn’t required under HSWA."

https://worksafe.govt.nz/managing-health-and-safety/novel-coronavirus-covid/the-difference-between-work-health-and-safety-ppe-and-public-health-ppe/