My advice is to do what you feel comfortable with and don't let anyone dissuade you from wearing a mask or covering.
We have been told here not to wear masks ,we dont need to, but commonsense tells me thats a lie and we're being told that because there is a shortage for medical staff and I get they need them the most.
I am going to make my own to wear when I go shopping, I saw how to make one on YouTube that is made from a hanky or bandana with a removable filter in the centre (can be made from backing material, paper coffee or vacum filters etc) and it is very simple to make.
You don't even have to sew it ( I will hand sew mine though)
The filter gets thrown out and then you wash the mask ready for next time.
Its not a medical mask by any means but it will help.
Anything covering your face, scarf or whatever has to help, just make sure you wash it when you return home.