My midwife says it's fine. I also made homemade Vicks w/olive oil & a few eucalyptus drops (worked just as well). I happened to be at the pharmacy one day and overheard the pharmacist explaining that the only difference in baby & adult Vicks is that they add perfume to the baby Vicks. Strange.
dd hated it when i tried it on night, so i just take the stuff and rub a little under my nose before bed time and that doesn't bother her at all, i wouldn't want to have to smell the stuff while i was trying to eat so why should she.
I have been really sick this month, so has DS. All I used was vicks. I also bought the baby version. It has no camphor in it. But the plain old vicks works better on both me and DS. He's 2 though, so he doesn't really need the baby stuff anymore.
The adult version has camphor. Baby version is nice and works great for both of us. As a PP said you can make your own with a little eucalyptus and lavender oil mixed in a neutral base (olive oil, petroluem jelly, or I used coconut oil).