One spray is too much! Perfume and cologne have always been offensive to me, and I think a lot of people feel the same. Not only is it a huge turn-off, but it can also cause headaches and allergic reactions. You should only be able to smell someone if you’ve got your nose snuggled up right next to them, not from across the room.
I honestly don’t think people realize they’re doing this because they slowly become nose blind to their own smell. If you’re not sure if you’re wearing too much, ask a friend or somebody you trust. Either way, a body mist (less concentrated) is a much better option, if anything at all.