You should be okay. Once you uninstall a Chrome extension and close all tabs (since code could have been injected into them), there won't be any code related t

You should be okay. Once you uninstall a Chrome extension and close all tabs (since code could have been injected into them), there won't be any code related to it running on your machine. It is still theoretically possible that while a Chrome extension was running that it updated state (via a cookie or otherwise) on webpages you were visiting, so perhaps clearing cookies could be helpful, but I'm not aware of this happening.