You know, now that I think about it, did Hino forget at some point why she wanted to get a perfume in the first ?
Basically she was like : I need her to stop sniffing me ! -> Let me get something to mask my scent -> Wait, I don't want something she will hate -> Let's get this one she will probably like ! -> I'm a genius ! -> Oh no !
I'm not really sure what she expected lol.