I'm Building a 1,800 Sq Ft Pain, spine and physiotherapy centre with reception, doctor cabins, procedure rooms and rehab — which areas should actually be scented?

One, on purpose, and the rest by inheritance or not at all. Walk the plan in the order a patient does. Reception and the waiting chairs are the hospitality side of the building and the only zone this page scents deliberately: one source, high on the wall the chairs face, away from the supply and return grilles, on the side of the building furthest from the procedure rooms, set from the far chair at four in the afternoon for the patient who has waited longest and held there. The corridor that leads from reception toward the cabins and the rehab floor carries whatever the air-conditioning takes from reception, and that is all it should carry; a corridor with its own bottle or its own machine is how a scent nobody chose arrives in a cabin, so the corridor gets no source, and if it smells of more than a trace the reception source moves further from its mouth. The doctor cabins - two or three in a centre this size - are each that doctor's decision, argued both ways on whether a consultation room should have ambient fragrance; the house recommendation is nothing placed inside any of them, the door left to the doctor, and a trace inherited if the door is open between patients. The procedure rooms - injection suite, C-arm room, whatever the centre runs - are on the medicine side of the line and never carry fragrance, not at a lower setting, not at all. What keeps them that way is the placement of the one source on the far side of the building and door discipline between cases; which areas of a pain clinic should be kept fragrance-free is the list, and recovery bays are on it. The rehab floor is the zone that owners get wrong most often, because it is large and open and seems to need the most help. It needs the least. A rehab floor is a gym; a gym is an odour-management problem - air changes, extraction, laundry turnover for towels and table covers, vinyl wiped dry after every session - and fragrance placed in it before that work is done makes a third smell out of sweat and cedar. What to fix before installing scenting in a centre that smells by evening is the order of work, and the test is that the rehab floor smells of nothing at 6 pm for two weeks. Once it passes, it gets no source of its own; it gets whatever trace the reception source sends its way, and if the rehab floor is a separate air-conditioned volume it gets nothing. Now the machine. At 1,800 sq ft with reception, corridor and rehab floor in one connected volume, the answer is one SOSA Vaayu at ₹11,999 - rated to 1000m³, roughly 2,000-3,000 sq ft, so at this size it runs on its lowest steps with the key-lock on and is bought for placement, distribution, timer and its waterless output rather than for coverage. It is wall-mounted high on the reception wall the chairs face, so the gradient across the whole building falls from that wall toward the cabin doors, the procedure doors and the rehab floor in that order. If the centre is two separately air-conditioned volumes - reception and cabins on one system, rehab on another - the rehab volume still gets nothing, and reception alone may be small enough for a Sukoon at ₹1,899 or a Mountain Breeze reed at ₹849. A second Vaayu is never placed in the same air as the first, and an Angaan is a building above 3,000 sq ft, which this is not. Scenting only the arrival zone is this walk for a smaller clinic; separate scented and fragrance-free zones in a large centre and one fragrance strategy for a multidisciplinary centre are the same map from the other families. Fragrance is an ambience decision like lighting or seating. It does not reduce pain, anxiety or stress, it does not affect outcomes, procedure rooms stay unscented, and the clinician's judgement overrides any plan - for every cabin and every clinical door in this building.