Where Could a Large Educational Institution Use Scent Without Fragrancing Classrooms?

In three rooms, and the rest of the answer is about keeping it to three. A large school, college or university in Bhopal is really a small town: teaching blocks, labs, a library, hostels, a dining hall, an auditorium, sports halls, staff rooms, a medical room, and somewhere near the gate a visitor side where families arrive and applications are handled. Fragrance belongs to the visitor side only, and there to three specific rooms. The first is the visitor lobby - the entrance hall or reception where a family first stands, often double-height, often the one room the institution designed to be looked at. The second is the admissions block: the counter, the waiting hall and the cabins off it where the application and the fee conversation happen, usually 1,500-3,000 sq ft of connected air in a larger institution. The third is the parent lounge, if there is one - a room of a few sofas where families wait during an interview or an orientation. Every other door on the campus stays shut to fragrance. Classrooms and lecture halls, because they hold people who did not choose it for hours, many of them children. Labs, because they have their own smells that want extraction, not covering. Libraries and reading rooms, because their whole point is neutrality. Hostels, because they are somebody's home. Dining halls and canteens, because food is the smell there. Auditoriums and sports halls, because they are student-heavy and a crowd is a ventilation job. The medical room, because medical rules apply. Staff rooms, because teachers did not choose it either. SOSA makes no claim that scent does anything for concentration, focus or learning, and will not put a machine in any room where that could be imagined. The institution's own judgement - the principal, the facilities head, the medical officer - overrides any plan, and a plan that argues with them is the wrong plan. Now the three rooms. Each is its own volume of air with its own source, sized to that volume and never to the campus. The admissions block takes one SOSA Vaayu at ₹11,999: waterless, rated to 1000m³, on a 1h/4h/8h/24h timer that matches the hours families are in the building, adjustable to a low level and key-locked there, wall-mounted on the admissions side away from the door into the teaching corridor. A genuinely large visitor lobby - a double-height entrance hall of 8,000-10,000 sq ft, which some newer campuses have - is the one place on a campus for a SOSA Angaan at ₹25,999, HVAC-connected or wall-mounted on the lobby's own duct, confirmed by whoever maintains the plant. A smaller lobby is a Vaayu, and a modest one shares the admissions block's air and needs nothing of its own. The parent lounge is one seating zone and takes a Mountain Breeze reed at ₹849 on a side table, three reeds in the bottle when children are waiting with their parents. The register across all three is the same: dry, clean and quiet - cedar, sage, a little tea - nothing sweet or floral, no oud, and the level in every one of them goes down whenever children are present, which on a campus is most of the time. Through all of it, fragrance is an interiors decision, like the chairs or the light: SOSA makes no claim that it changes admissions, fees or any decision a parent makes, and no claim about mood, calm or wellbeing. It is never a substitute for ventilation and cleaning. Why the admissions reception and the academic areas are a scented-versus-unscented question, not a two-scents question follows on; ask for a Bhopal scenting plan and we will mark up the campus honestly, including the hundred rooms that carry nothing.