Sorry, but if you're using adblock or disabling javascript for certain sites then you are already applying some protection measures or using some kind of protection on your computer, that whole post is a contradiction within itself
You could even theoretically click nothing suspicious, all it takes is for a legit trusted site you visit having a javascript exploit or an ad which is exploited and you're infected. And you don't really notice malware injection as it's happening if you don't have any kind of protection against it, it might not even appear in later scans depending on the malware behaviour.
Bottom line, it's impossible to keep a computer fully secured when connected to and using the internet regularly, especially without any kind of protection.