Why does this come to mind while I'm kissing my fiance?

This only started happening recently. I love kissing him and all that. But lately when we've been making out (especially in the dark) I worry about his nose leaking boogers onto our kissing mouths and me ingesting some. Maybe it's because his boogers come out of his nose more often than mine do and I always tell him about it so he wipes them away. What if that were to happen during kissing or ? I know it sounds so immature but seriously it is affecting me enjoying our intimate time!