Your question has been heard loud and clear.
Yes , spirit filled thermometers are safer than mercury ones , actually they are made to be safer than the mercury.
In a spirit filled thermometer , it is precise and also there really is no risk of the stuff (usually alcohol or organic liquid) exploding if the thermometer glass breaks unlike the mercury thermometer , where if the glass breaks , there is a high risk of the mercury ball intoxicating the air and endangering lives.
Thank you