It'll keep on to show yellow when cooling down .clean your electrodes with a stainless-steel micro brush .it’s swift using this method like 20 minutes .store in dark .put in spray bottle and spray a stinky vacant garbage can .spoke it perfectly then smell ..no scent .much like rain scent https://www.ebay.com/itm/175740104079?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=09irNpmNS7y&sssrc=2566055&ssuid=09irNpmNS7y&widget_ver=artemis&media=COPY