Attars are bio-degradable and good to the nature when we compare it with perfumes. You cannot mix perfume with water in our water bodies or in the air as that can be harmful due to the presence of chemicals in general. If your perfume is synthetic then there is your answer.
Attars use flowers while perfumes use chemicals which can also be harmful. But here it depends on person to person, skin type to skin type. Some people are also super allergic to genuine natural products so you will have to test it out.