I haven't done much traveling, since I started trying so many perfumes, but when I did, it was to evacuate hurricanes and I was so stressed out that I relied on a single note French lavender to carry me through by Pre de Provence. It was the only scent I could tolerate and I clung to it. Lavender has relaxing properties and is often used in aromatherapy. If I was going on vacation, or whatever, I would probably bring two and then buy something new when I got there, so I could have just the right thing for the situation. I wouldn't be able to guess in advance.