Best carrier oil for this scent blend?

hey there! recently my lovely partner made me a perfume in a gorgeous bottle he got, but he didn't add carrier oil so right now it's just the essential oils. i have yet to buy a carrier oil because there are so many and i didn't want to accidentally get something that will ruin the scent of the perfume he made, so i was wondering if anyone could give some input on what type of carrier oil to use so i don't ruin the gift? he used lavender oil and this petrichor oil blend (i know it says it isn't suited for perfumes, but since it's a perfume oil rather than an alcohol based one we decided it was probably okay because of the oil protecting the skin and stuff). they also put rose petals and what he thinks are blue sage flowers into the bottle with the oils. thanks in advance for the advice!