The mask will only protect the wearer if it is FFP2 rated or higher. Anything less will not only allow small droplets through, it will keep them nice & warm and in direct line of everything you breathe in.
The purpose of the lower-rated masks is to slow-down the movement of exhaled droplets so they travel a lesser distance and they work really well at that level.
I'll be honest and say my preference is for everyone in any healthcare setting to wear a FFP 2 mask. Given recent surgeries,& illnesses, i carry a mask to wear in any confined area that has a lot of people in close proximity. I don't feel the need in the supermarket but will wear one in a bus, and especially in the queue at the chemist