In HP7p1, when Harry, Hermione, and Ron are on the hunt for more horcruxes and Hermione almost gets caught by snatchers, she says:

The ONLY THING I COULD THINK OF IS, really?! As you’re packing all of the essentials the three of you will need on a trip that will last God knows how long, you’re checking shit off your list, like “clothes….check. books….check. toothbrush….check. Britney Spears’ Fantasy….check.”
I just imagine her getting up every morning during this quest and going into the bathroom (does the tent have a bathroom?) or taking her stuff into the forest to pee and get ready and doing this:

“NOW I’m ready to hunt the FUCK out of some horcruxes!”
I THOUGHT EXACTLY THE SAME.
I definitely wonder why she’s wearing perfume everytime I watch that movie… but maybe it’s because I’m allergic so I...
Well duh. What if the girl had to use some of her special “skills” to get the boys out of a jam. She can’t do that...
I’ve thought about that too, and my theory is that she wore perfume because she was afraid she’d stink being out there...
THIS!!!!!