We had masks when my wife had cancer, so anybody who came to the house we’d put a mask on them. Most nursing homes have masks at the desk, and I always put them on, not to protect myself, but just in case I have a bug I don’t notice yet.
If your mask does not fit properly as you were trained to wear it, then you are actually more at risk than if you had none. And if you have a bug, you will more likely spread it around because your mask does not fit properly so the virus will escape.