I have been wearing an earplug in my bad ear whenever I am outside of my home, and it has worked well for me.
You never know when a door might slam, or a motorcycle might accelerate. Noises can interfere with with our recovery or even cause a spike.
Our ears have been compromised. Noises that a healthy person might not even notice can do a lot of damage for one of us.
You might consider avoiding even moderate noises like that of a vacuum cleaner, blender, and hair dryier.