How Do I Fragrance a Two-Floor Appliance Experience Centre?

As two rooms that happen to share a staircase. That is the whole answer and everything else is detail, so begin with why. Fragrance travels with air, and the air on one floor of a building does not travel to the other in any quantity that matters. A stair is a narrow opening with a strong updraught of warm air on a hot afternoon and almost none on a mild morning, and either way the volume it moves between floors is a fraction of what each floor's own air-conditioning is moving within the floor. So a machine on the ground floor does not scent the upper one, and an owner who has tried it knows the result: the stairwell smells faintly of cedar, the upper displays smell of nothing, and the ground floor has been turned up to compensate until the advisor at the desk complains. Two floors are two volumes of air, and one volume takes one machine. Each floor gets its own source, mounted high on the wall that floor's supply grilles cross, away from that floor's returns, above that floor's partitions, exactly as where the machine goes on a central-AC floor describes for a single level. Each level is set separately, from that floor's own far point, with the team who stand there, at five in the afternoon, and locked. The upper floor will often take a slightly different setting from the ground floor even with an identical machine - it may be warmer, it may have a different mix of glass and wood, it may have no street door and therefore no draught - and that is fine. The setting is per floor; the scent is not. The same scent on both floors, without exception. A visitor who climbs the stairs is walking through one building that has been designed as one home, and two registers make the upper floor a different shop. One signature scent vs multiple zones is the pillar on why, and the short version is that two scents in one building make a third that nobody chose at the landing. Now the two cases where the arithmetic changes. First, the shared plant. If a single air-handling unit serves both sales floors and nothing else - no live kitchen, no coffee counter, no back office on the same duct - then one SOSA Angaan connected to that duct can carry one scent to both floors from one reservoir. The condition is absolute and it is not ours to confirm: whoever maintains your plant says which duct serves what and where an access point is possible, and SOSA gives no engineering advice. Where that confirmation cannot be had, two wall-mounted SOSA Vaayus are the honest plan and usually the better one. Second, the void. Some experience centres cut a double-height opening through the slab with the upper floor as a gallery around it. That is not two floors; it is one tall volume, sized by area times height, and high ceilings is the page that does the sum. One machine at grille height serves it, and a closed room off the gallery is a separate small volume with a reed on the desk. Machine and price: two Vaayus at ₹11,999 each, one Angaan at ₹25,999 on a confirmed shared plant, a Mountain Breeze reed for the small upper-floor room. And the frame: fragrance is an interiors decision, like lighting or music. SOSA makes no claim that it changes dwell time, footfall, conversion or sales, no claim about what it does to any appliance or finish, and it is never a substitute for ventilation, cleaning or extraction. The live kitchen and coffee counter stay unscented on whichever floor they sit. Ask for a showroom scenting plan and send both plans with the stair and any void marked.