There are several manufacturers of 100% natural perfumes -from the top of my mind, Raer (Berlin), Hiram Green, James Heeley I think too. That said I think it's

There are several manufacturers of 100% natural perfumes -from the top of my mind, Raer (Berlin), Hiram Green, James Heeley I think too. That said I think it's unlikely this will be the reason. Another interesting thing to try would be one-note or other simple perfumes (like Pantomime).