If Clean Slate seems to last longer right now than it did back in January, that's not nostalgia. It's temperature.
The short version
Fragrance works through evaporation — molecules lifting off a surface into the air, which is the only way a nose can pick them up from across a room. Evaporation speeds up as temperature rises and slows down as it drops. A cold room in the middle of winter is, chemically, a slower room.
What that means in practice
In winter, a mist's top notes take a little longer to burn off, which stretches out the whole three-act structure (worth a read if you missed that post). The scent feels like it "lasts longer," and in a real sense it does — you're just moving through the same three stages more slowly.
It also means a candle's scent throw is a little quieter in a cold room, since less fragrance oil is evaporating off the melt pool per minute. If a candle feels underwhelming on a freezing evening, it's not a bad batch — the room's just working against it slightly. A few minutes near a heater, or simply giving it longer to run, usually sorts it out.
The trade-off
Come summer, the opposite happens: everything moves faster, opens brighter, fades sooner. Neither season is "better" for fragrance, just different. Winter rewards patience. Summer rewards topping up.