Yes, lithium batteries do
Yes, lithium batteries do present special hazards when ignited. One source recommends using only a Class D fire extinguisher since Lithium-metal reacts with water and makes the fire worse. EVs will eventually have to be equipped with special fire extinguishing features. For more about the problems with lithium batteries, here are two informative links:
https://www.torquenews.com/video/teslas-lithium-ion-vs-lithium-iron-batteries
https://batteryuniversity.com/learn/article/safety_concerns_with_li_ion