this is of legitimate concern. spraying chemicals all over yourself and letting your skin absorb them, EVERY SINGLE DAY, is absolutely something to worry about.
think regulation will save you? think again. classifying something as "fragrance" allows companies to file them as "trade secrets", thereby not requiring them to disclose the ingredients.
my research on this usually leads back to something called PHTHALATES. they are the major endocrine disruptor and possible cancer agent. they are used to create stability in fragrance and prolong shelf-life.
i would be willing to wager that phthalates are more common in cheap, department store fragrance than in high-end niche parfumery.
i also asked MY favorite fragrance company, CREED, if they use phthalates and they insisted that they do not. this made me feel better. it also explains why Creeds differ so much from batch to batch, and why they spoil easily over time. which is a point of contention to so many around here (not me), but worth it in my opinion in order to, i don't know, NOT GET CANCER.