In what it’s calling an “aroma ad,” home goods and fragrance corporation Bath & Body Works is pumping vanilla and fresh pine scent from diffusers attached to steel girders in the tunnels connecting the subway beneath Grand Central Station in New York City.

As The Associated Press reports, commuters’ olfactory senses are being assaulted by the “Fresh Balsam” scent as part of a promotion campaign in collaboration with the Metropolitan Transportation Authority (MTA).