These are not nails, they are events -and they cause distraction. Cut them for the interview to avoid being dinged. Nails, like hair, grow back. I know, some of you will struggle with this, but after you get hired, you can wear them however you like. Better to be safe than sorry.
Fragrance is taboo during the entire interview process.
Some smells are offensive. Some people are allergic to smells. In fact, in Marin County, California, an ordinance was voted to ban people from wearing fragrance on public transportation. The initiative lost, but the point was loudly made. Don't risk the possibility of having your interviewer sneeze or have runny eyes because of your fragrance.