Getting nonce verification needed for every instance of a $_GET or $_REQUEST var

I am getting a “nonce verification needed” warning for every instance of a $_GET or $_REQUEST variable in a conditional when there is no form submission, ajax query or other type of transmission happening. These are not hard to ignore, though a bit annoying. This is also troublesome because I am editing a plugin that was flagged as not secure by the repository review team and I need to clear all errors and warnings using this plugin. If I am wrong on thinking that nonces are not required just because a $_GET or $_REQUEST is used in the code, please let me know. I could be wrong on that point.