Once again users are picking apart the latest Pokémon Go update and have found small references to upcoming features we knew were coming, such as trading, catching legendary Pokémon, but perhaps most surprising was code relating to new types of Incense.
Listed as Item_incense_spicy, Item_incense_cool and Item_incense_floral, the speculation about what each of them could be has already begun. A popular assumption on The Silph Road is that Spicy will attract Fire-type Pokémon, Cool will attract Water-type Pokémon and Floral will attract Grass-type or Bug-type Pokémon.
Again though, this is purely speculation at this point and shouldn’t be taken as fact.
In previous Pokémon games Incense had a variety of effects, such as boosting certain attack type (Water, Grass, etc) or aiding in Pokémon breeding, but it wasn’t used to attract Pokémon.