Incense: “Incense with a mysterious fragrance that lures wild Pokémon
to your location for 30 minutes.”
I have observed that if a Pokémon appears for me at a given time and location it will also appear for others nearby. Does this mean that if one person in a group uses incense that it will help others in the group as well?
Regular incense does not affect other players.
You can use a Lure Module and attach it to a PokéStop. It does affect other players.
Lure modules attract Pokemon to the PokéStop it was activated on.
These Pokemon are visible to you and everyone else near the PokéStop.
Source : Link , Question Author : Abhas Tandon , Answer Author : Community