I love smelling my boyfriend's laundry before I wash it.
Why do you like smelling your boyfriend's dirty laundry?
I love the smell of it after he wears it all day, and it makes me feel good.
It's good that you feel happy with your partner and like them, but if someone finds out that you regularly sniff your boyfriend's dirty laundry, they may think you're a bit strange. You're not harming anyone by what you're doing, but it's definitely something that other people might find weird and judge you for.
Wow, I suppose you're right.
I am glad you see so. It is an odd habit, but kept in private, it can't really hurt anyone. Smell away.