Why Does Fragrance Smell Different On Different People?

That tester card is pristine. It doesn’t sweat or produce oil. It hasn't been sitting in a damp bedroom or soaking up the fumes from last night’s takeaway. In the shop, the testers are kept in perfect conditions - cool, controlled, and fresh.

You’re smelling the "ideal" version of the fragrance. Also what you can smell is usually just the opening notes - the sharp bursts of citrus, alcohol or sweetness - and they only last for about ten minutes. 

That’s not long enough to make a decision about a fragrance that you want to wear every day, all day.

Open rails can make clothes smell worse because they're exposed. 

Stand in a packed train and you can smell cooking smells, pet smells, damp air, candles, and stale bedroom air, on clothes that have been left in the open. After a while, people don’t notice those smells on themselves anymore - they literally get used to it.

Then there's the hats lined up on a shelf, jackets hung on a hook by the door, that jumper draped over a chair because it looked good there. Guys see that as decor, not laundry, so it never gets treated like clothing at all.

It's annoying when a scent you loved turns nasty an hour later? You wonder, "Is this vinegar? Metal? Wet coins?" Maybe the bottle has gone off? Sometimes the dry notes mix with your sweat or natural oils and just curdle.
The cqn happen with sweet or fresh notes too. You spray on a warm, vanilla-like scent, but on you, in the heat, it smells like a sickly cloud. 

Or you try a fresh, aquatic scent that promises ocean breezes, and realise your skin smells more like chemical bathroom cleaner. It isn't always the fragrance’s fault. It just doesn't like the environment you are giving it.

Guys with oily skin are the lucky ones. The fragrance can hold onto that oil and last longer and even smell stronger through the day. If your skin is dry, that fragrance will usually disappear faster or smell sharper than you'd wanted. 
Then there's body heat - warm skin can make the fragrance lift off the body faster, so people around you can smell it when you move. Cooler skin holds it back more, so the fragrance stays nearer to the body. That's why one man can use two squirts in the morning and still smell good at 4pm, while another man uses the same amount and smells more like the meal he had at lunchtime.

You spray your fragrance in the morning. It smells good. Then an hour later, you can barely smell it, so you keep topping it up. 

You might think it’s vanished, but really your brain has been smelling it for a while and just got bored of registering it. Meanwhile, everyone else is trapped inside the cloud of your scent trail. That is why people tell you to stop spraying - it is not gone for them, just for you.

Your washing machine might be dumping layers of stale water and old detergent into the fibres of your clothes - that creates a base layer of mustiness that your expensive fragrance can’t cover.
Check the rubber seal - old water, detergent and lint hide in the folds of it and go off. The drawer does the same thing with built-up softener and detergent residue. Give all of that a good clean out. A hot maintenance wash can sort most of it out, but if the smell keeps coming back, a strip wash on clothes that hold the most odour - T-shirts, gym kit, socks, anything synthetic - usually finishes the job.

You don't have to wash everything at 30 degrees just because you have an eco-setting. Crank the heat up - especially for towels and gym kit - because low temps let bacteria and biofilm build up in fibres. 

Once synthetics get that bacterial glaze, they can survive three washes and still smell stale, so deep-clean those on their own, if they've already turned.

Also, leave some actual space in the drum; because if you overload it, your clothes never rinse clean, they just swish around in dirty water.