[pwg]

While I do not recommend use of Chrome (Google's interests do not synchronize with your interests) you can install this to dull the threat of cookies:

Cookie AutoDelete: https://chrome.google.com/webstore/detail/cookie-autodelete/...

There is also a Firefox version: https://addons.mozilla.org/en-US/firefox/addon/cookie-autode... and at least Mozilla's interests may slightly align more with your own than google's interests. So you might consider switching to Firefox as well.