Protect yourself from infection and then it will not be transmitted to others.
Exactly! My wife drove an elderly neighbor to the hospital. Was told the vented N95 she was wearing was not good enough. So she put on the surgical mask they provided instead.
“It was like I was naked! The sides were leaking air in AND out - it was stupid!”
I told her next time to keep the N95 on and put on the surgical mask as well.