Should I Increase Fragrance Intensity When Doors Are Opening Frequently, or Reconsider Machine Placement First?

Placement first, and I will go further than the question asks: placement first, and then, once the source has moved, usually nothing else. The reason is what a door does to a room. Every time it opens, the air at the threshold - a metre or two of it, more when the door is wide or the street is hot - is exchanged with whatever is outside. That exchange is not a leak that a stronger source can outpace; it is a pump that runs at the speed of your visitors, and on a busy day it never stops. A source placed anywhere on the path between that door and the AC return is emptied before the room has taken anything from it: the fragrance is made, the door takes it, the street gets it. That is a location problem. Turning the dial treats it as a quantity problem, and a quantity answer to a location problem produces the pattern I see in almost every busy-door email: the threshold still smells of nothing, because the air there is still leaving; the pavement outside smells faintly of your reception; and the desk, the sofas and the person who sits at the desk for nine hours are now in far too much. Your receptionist says it is too strong. Your visitor says they noticed nothing. Both are right, and the machine is in the wrong place. So the order is fixed. Move the source first. Inward, to the reception side, on a wall or the HVAC supply that serves the room, off the straight line between the door and the return grille, and near where the conditioned air arrives rather than where it is drawn away. The air in a room with a busy door moves from the door inward on every opening, and a source placed inward is fed by that movement rather than emptied by it. Then the test, and the test is where the dial finally appears: close the door for ten minutes, sit in the chair furthest from the machine, and judge it there - not at the threshold, which is a draught, and not at the desk, which is nearest the source. If the far chair has a trace and the desk can no longer name it, the level is right, and it is almost always the level you already had. If the far chair has nothing with the door shut, that is the one situation in which the setting goes up a step - then the door is opened again and the far chair checked again. In the rooms I plan for Bhopal, that step happens perhaps one time in five; the other four, the move was the whole answer. Bhopal gives the dial two more reasons to stay alone: in summer a visitor arriving from a hot street reads any fragrance as more intense in the first minute, and in the monsoon the propped door and the humid air carry it further than in the dry months. As for what does the holding: one SOSA Vaayu at ₹11,999 for a connected room or floor of about 1,500-3,000 sq ft, because it is the machine that can be put where the air arrives - wall or HVAC mount - and then left alone: adjustable intensity, 1h/4h/8h/24h timers, waterless, and a key-lock, which in a busy-door room is the control that matters, because the person nearest the door is the person most tempted to turn it up. In a small room, a Mountain Breeze reed at ₹849 or a SOSA Sukoon at ₹1,899 goes on the wall furthest from the door. Two Vaayus in one air is never the answer to a door; one, moved, is. The office door page explains the pump; the hotel entrance page takes the same rule to a lobby with porters and trolleys; the family pillar puts doors beside the AC, the fans and the glass. Fragrance is an interiors decision like lighting or seating: SOSA makes no claim that it changes what any visitor, client or guest decides, pays or thinks of your business, no claim about mood or wellbeing, and it is never a substitute for ventilation and cleaning. Ask for a Bhopal scenting plan with the doors and the returns marked, and the first thing we will say is whether the machine needs to move.