Why altitude changes the answer
Alcohol vapor and an unpressurized cargo hold are a bad pairing, so aviation rules treat fragrance the way they treat any flammable liquid. Trucks face no such physics, which is why the identical bottle is fine on the road and forbidden above it.
Packing a glass bottle of liquid
Cap tight, a strip of tape over the atomizer, the bottle sealed in a zip bag to contain any weep, then bubble around the glass and firm fill in the box. A leak that reaches the shipping label can end the trip early, so the bag is not optional in spirit even where it is in law.
Say what it is
Writing candle or gift on a fragrance shipment to dodge the ground limit is the expensive kind of clever: it voids carrier liability and can strand the package. The checkout prices the honest description in seconds, and the honest description ships legally.