I think it's safe for a G6PD baby since I've read that Vicks stripped off menthol and camphor content, the very same ingredients that make Vicks VapoRub not suitable for babies below 2 years of age. However, It's best to consult your pedia just to be sure.
"It contains petrolatum, fragrance, aloe extract, eucalyptus oil, lavender oil and rosemary oil—but not menthol or camphor." http://blogs.scientificamerican.com/news-blog/after-vaporub-warning-what-about-ba-2009-01-14/
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I believe it's safe for G6PD babies per a review in a G6PD-focused parenting group.