the Mototov Cocktail is a special* spawning throw-able weapon that engulfs the targeted area with flames for a couple of seconds, burning 1d6 common infected or ½ 1d6 special infected ( rounded up ). When you choose to use the molotov ( because you can hoard it for later if you like ) you'll spend both attack actions to do so.

*It will appear in circumstances of severe danger, assigned randomly to one⁺ of the remaining idol[s]. It can be passed to another idol for no penalty.