Some websites would pop up a request to send you notification whereby you'll have the option to Block or Allow the request.
This could allow a website to provide addtional value to its visitors, but some people who never use the feature could find it annoying to have to repeatedly block such requests.
Web push notification for Google Chrome or Chromium can be disabled from Setting's page.
Steps to block notification for Google Chrome and Chromium:
page by going to chrome://settings
from the URL
Scroll down and click on Privacy and security
section or click from the sidebar menu.
Click on Site settings
Scroll down and click on Notifications
Switch off the toggle switch for Sites can ask to send notifications
Explicitly set sites to be blocked or allowed to send notification by adding the URL
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