Know exactly what you mean, I too have the same reaction to some scents, have to hold my nose and not breathe when going past a perfume counter, or someone smoking, etc..gets me instantly with headache, runny nose and sinusus.I guess we have an allergy to lot of things My hubby complains because he can't wear his aftershave anywhere near me, and I can only use non perfumed products.
I would love to be able to wear beautiful perfume !! but sadly it's not to be. :(