I don’t really know either, but would avoiding anything related to Google stop this? There are alternative browsers and search engines.
Unfortunately what I have read, is browsers now are building this cookie into their code. It reloads, it does not show up in regular cookie lists to be deleted. This is a special google cookie that that loads that you must (for your own good) host. Some said even Opera has it.
https://support.mozilla.org/en-US/questions/1042916