I was seeing that same "Ask You" thing in my Notifications section, and I was getting those pop-ups with the "System Settings" graphic constantly. My ASUS Router/TrendMicro protection would always BLOCK the website linked to those Notifications if you clicked on them listing it as a Malware site.
After following the instructions in this thread related to DENYING access to the source of those Pop-Ups in the Safari/Settings/Websites/Notifications section, the bogus virus Notifications not only stopped, but that "Ask You/I am Not a Robot" item in my actual Notifications section also disappeared.
The offending Pop-Up was easy to spot in the Safari Settings/Website/Notifications section. It was at the very top and only showed that bogus "System Settings Gear Graphic" and nothing else. I selected it with one click and then went down to the bottom left section of that box and clicked REMOVE. You can also uncheck the box in that same window that says: "Allow websites to ask permission to send notifications" if you don't want a repeat of this thing or something similar happening again in the future.
So to recap... Just turning off that "Ask You" thing in the actual Notifications section of the OS doesn't completely get rid of this thing. Doing the above stuff in Safari Settings totally does!
[Edited by Moderator]