Google Chrome hacked since 2 days ago

Since 2 days ago, my Chrome works strange. Everytime I push 's' on keyboard, the right button click type screen shows up. Also, when I press '3' on my keyboard, it also gives some pop-up. If it's on FB posting space typing, 'insert emoji' would pop up. So, I need to type the drafts on the text editor to do the cut and paste. Is this hacking? I think '3' button hack is like pressing 'tab' effect giving.